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  1. Consonance Cyber 880i tube amplifier (RRP $4,980 AUD) Specced with 8 x kt150 valves. Excellent condition. Includes manual and two spare kt150 valves. More details here: https://www.osbornloudspeakers.com.au/cyber-880i Osborne Titan Elite speakers (RRP $5,500 AUD) Very good condition, besides the cup-shaped discolouration on the top of one speaker (see photos). I think they're in Satin Tasmanian Oak. More details at: https://www.osbornloudspeakers.com.au/copy-of-titan-1 Selling on behalf of my mother-in-law. Her late husband was something of an audiophile. Please let me know if you would like more information or photos. I never got as far down the rabbit hole as he did, but I will do my best to answer.
  2. Further Information: Production year 1971. The price is for one tube (I have 2 available). Russian 6C33C Svetlana factory of St. Petersburg is way superior to Ulyanovsk factory. Much more musical sound. Svetlana factory tubes are SEVERAL times more reliable and has SEVERAL times longer lifespan, than Ulyanovsk factory. Compared to Svetlana, Ulyanovsk 6C33C often are called "hit and miss". This tube was tested once in my amplifier before this sale - amazing sound. Comes with genuine printed specifications list. I had original boxes as well, but disposed it. Free shipping.
  3. Further Information: Current Canary Audio model. Srajan Ebaen – 6moons, Canary CA-339 (discontinued inferior model): “If you asked me to name another 50-watt 300B amp, I don't think I could” Key Kim – Stereo Times, Canary M350 (current inferior model): “The M350 put me in a hypnotic state. It has an uncanny ability to transport music in an ethereal way. I was stunned by the intense level of purity, immediacy, and solidity of her voice. I felt as though she was in the room. After reviewing many tube amplifiers in the past few years, I decided I like the Canary Audio M350 so much that I'm keeping these” Renowned audiophile guru Arthur Salvatore has described Canary CA-339 (M600 is a direct upgraded successor) as the second best tube power amplifier they EVER had in the audio shop. And Salvatore has tested virtually all the very best iconic hi-end audio brands: Lamm, Wavac, VAC, CAT, Wytech Labs, Jadis – you name it. I have to agree with Salvatore. In my house, I have compared Canary M600 with several iconic tube power monoblocks. M600 just trashed them all by a huge margin. I personally would define M600 as “Jaw Dropping” class tube power amplifier. The sound is stunningly natural, relaxing, unbelievable vocals AND extremely, shockingly detailed at the same time - something almost impossible to achieve. I can think only of a COUPLE tube audio brands in “that” class, with cost exceeding cost of average brand new car. Recently ALL TUBES have been replaced by the very best brands available: 300B: 8 brand new JJ Audio Slovakia 6SN7: 2 NOS Sylvania military grade JAN 6SN7WGT VT-229 USA 2 NOS Philips ECG military grade JAN 6SN7WGTA USA 5UG4: 2 NOS Raytheon 5UG4GB USA 2 NOS General Electric 5UG4GB USA I have installed quality German made 8 Hi-Fi isolation feet (4 on each amp) costing $360. Beautiful huge blue display. Comes with genuine printed user manual and Australian power cords. M600 is USA power supply version. Unit comes with industry best powerful 1010 W Australian Tortech step-down ISOLATION transformer. Local pick-up. You may arrange shipping with “Pack-and-Send” at your cost. M600 Monoblock Amplifiers Built around 300B Triode Tubes: The M600 is a class A triode mode, push-pull parallel monoblock power amplifiers with 300B output tubes. It is the upgraded version of the M500 with the use of highest quality parts and components such as Amtrans AMRG premium carbon film resistors. It has a newly designed integrated power circuit with time-delay relay to eliminate turn-on thump. The M600 features a modified circuitry that guarantees a more dynamic soundstage with deeper bass tone. Like all other Canary products, only highest quality parts and components are used in critical applications. The oversize custom wound power and output transformers are specially designed to handle twice of its power rating, ensuring durability. Two independent chokes are employed for rectifier filtering on each channel. The Muscular Canary: The M600 monoblock power amplifiers are specially designed for optimum sound quality. Deliver high power music at wide dynamic range with ultra low distortion, the M600 is simply the finest amplifier one could desire. Maybe the muscular canary doesn't exist in nature, but if one existed, it might sound something like this amplifier. Special Features: Amtrans AMRG premium carbon film resistors with gold-plated leads. Integrated power circuit with time-delay relay to eliminate turn-on thump. Newly designed high voltage power supply. Rectifier with double choke filtering (two chokes are employed per channel). The input circuit has been redesigned to be faster and more dynamic. Custom EI power transformers. Exclusive machined Delrin 300B tube sockets with gold plated pin receptacles. Specially designed power meter with a custom backlite LED display. 100% handcrafted in California, USA. SPECIFICATIONS Rated Power Output: 50 Watts RMS Input Sensitivity: 0.75 Volts for full output Input Impedance: 150,000 Ohms Frequency Response: +/- 1dB from 10 Hz to 80,000 Hz Total Harmonic Distortion: < 0.2% Signal-to-Noise Ratio: -81 dB below 1 Watt Damping Factor: 14 Power Consumption: 350 Watts (true RMS) Output Impedance: 4, 8 Ohm Tube Complement (per monoblock): 4 x 300B 2 x 6SN7GTB 2 x 5U4GB Dimensions (per monoblock): 12" W x 25.5" D x 9" H Net Weight (per monoblock): 75 lbs
  4. Further Information: Current Canary Audio model. Srajan Ebaen – 6moons, Canary CA-339 (discontinued inferior model): “If you asked me to name another 50-watt 300B amp, I don't think I could” Key Kim – Stereo Times, Canary M350 (current inferior model): “The M350 put me in a hypnotic state. It has an uncanny ability to transport music in an ethereal way. I was stunned by the intense level of purity, immediacy, and solidity of her voice. I felt as though she was in the room. After reviewing many tube amplifiers in the past few years, I decided I like the Canary Audio M350 so much that I'm keeping these” Renowned audiophile guru Arthur Salvatore has described Canary CA-339 (M600 is a direct upgraded successor) as the second best tube power amplifier they EVER had in the audio shop. And Salvatore has tested virtually all the very best iconic hi-end audio brands: Lamm, Wavac, VAC, CAT, Wytech Labs, Jadis – you name it. I have to agree with Salvatore. In my house, I have compared Canary M600 with several iconic tube power monoblocks. M600 just trashed them all by a huge margin. I personally would define M600 as “Jaw Dropping” class tube power amplifier. The sound is stunningly natural, relaxing, unbelievable vocals AND extremely, shockingly detailed at the same time - something almost impossible to achieve. I can think only of a couple tube audio brands in “that” class, with cost exceeding cost of average brand new car. Recently ALL TUBES have been replaced by the very best brands available: 300B: 8 brand new JJ Audio Slovakia 6SN7: 2 NOS Sylvania military grade JAN 6SN7WGT VT-229 USA 2 NOS Philips ECG military grade JAN 6SN7WGTA USA 5UG4: 2 NOS Raytheon 5UG4GB USA 2 NOS General Electric 5UG4GB USA I have installed quality German made 8 Hi-Fi isolation feet (4 on each amp) costing $360. Beautiful huge blue display. Comes with genuine printed user manual and Australian power cords. M600 is USA power supply version. Unit comes with industry best powerful 1010 W Australian Tortech step-down ISOLATION transformer. Local pick-up. You may arrange shipping with “Pack-and-Send” at your cost. M600 Monoblock Amplifiers Built around 300B Triode Tubes: The M600 is a class A triode mode, push-pull parallel monoblock power amplifiers with 300B output tubes. It is the upgraded version of the M500 with the use of highest quality parts and components such as Amtrans AMRG premium carbon film resistors. It has a newly designed integrated power circuit with time-delay relay to eliminate turn-on thump. The M600 features a modified circuitry that guarantees a more dynamic soundstage with deeper bass tone. Like all other Canary products, only highest quality parts and components are used in critical applications. The oversize custom wound power and output transformers are specially designed to handle twice of its power rating, ensuring durability. Two independent chokes are employed for rectifier filtering on each channel. The Muscular Canary: The M600 monoblock power amplifiers are specially designed for optimum sound quality. Deliver high power music at wide dynamic range with ultra low distortion, the M600 is simply the finest amplifier one could desire. Maybe the muscular canary doesn't exist in nature, but if one existed, it might sound something like this amplifier. Special Features: Amtrans AMRG premium carbon film resistors with gold-plated leads. Integrated power circuit with time-delay relay to eliminate turn-on thump. Newly designed high voltage power supply. Rectifier with double choke filtering (two chokes are employed per channel). The input circuit has been redesigned to be faster and more dynamic. Custom EI power transformers. Exclusive machined Delrin 300B tube sockets with gold plated pin receptacles. Specially designed power meter with a custom backlite LED display. 100% handcrafted in California, USA. SPECIFICATIONS Rated Power Output: 50 Watts RMS Input Sensitivity: 0.75 Volts for full output Input Impedance: 150,000 Ohms Frequency Response: +/- 1dB from 10 Hz to 80,000 Hz Total Harmonic Distortion: < 0.2% Signal-to-Noise Ratio: -81 dB below 1 Watt Damping Factor: 14 Power Consumption: 350 Watts (true RMS) Output Impedance: 4, 8 Ohm Tube Complement (per monoblock): 4 x 300B 2 x 6SN7GTB 2 x 5U4GB Dimensions (per monoblock): 12" W x 25.5" D x 9" H Net Weight (per monoblock): 75 lbs
  5. Further Information: Current Canary Audio model. Srajan Ebaen – 6moons, Canary CA-339 (discontinued inferior model): “If you asked me to name another 50-watt 300B amp, I don't think I could” Key Kim – Stereo Times, Canary M350 (current inferior model): “The M350 put me in a hypnotic state. It has an uncanny ability to transport music in an ethereal way. I was stunned by the intense level of purity, immediacy, and solidity of her voice. I felt as though she was in the room. After reviewing many tube amplifiers in the past few years, I decided I like the Canary Audio M350 so much that I'm keeping these” Renowned audiophile guru Arthur Salvatore has described Canary CA-339 (M600 is a direct upgraded successor) as the second best tube power amplifier they EVER had in the audio shop. And Salvatore has tested virtually all the very best iconic hi-end audio brands: Lamm, Wavac, VAC, CAT, Wytech Labs, Jadis – you name it. I have to agree with Salvatore. In my house, I have compared Canary M600 with several iconic tube power monoblocks. M600 just trashed them all by a huge margin. I personally would define M600 as “Jaw Dropping” class tube power amplifier. The sound is stunningly natural, relaxing, unbelievable vocals AND extremely, shockingly detailed at the same time - something almost impossible to achieve. I can think only of a couple tube audio brands in “that” class, with cost exceeding cost of average brand new car. Recently ALL TUBES have been replaced by the very best brands available: 300B: 8 brand new JJ Audio Slovakia 6SN7: 2 NOS Sylvania military grade JAN 6SN7WGT VT-229 USA 2 NOS Philips ECG military grade JAN 6SN7WGTA USA 5UG4: 2 NOS Raytheon 5UG4GB USA 2 NOS General Electric 5UG4GB USA I have installed quality German made 8 Hi-Fi isolation feet (4 on each amp) costing $360. Beautiful huge blue display. Comes with genuine printed user manual and Australian power cords. M600 is USA power supply version. Unit comes with industry best powerful 1010 W Australian Tortech step-down ISOLATION transformer. Local pick-up. You may arrange shipping with “Pack-and-Send” at your cost. M600 Monoblock Amplifiers Built around 300B Triode Tubes: The M600 is a class A triode mode, push-pull parallel monoblock power amplifiers with 300B output tubes. It is the upgraded version of the M500 with the use of highest quality parts and components such as Amtrans AMRG premium carbon film resistors. It has a newly designed integrated power circuit with time-delay relay to eliminate turn-on thump. The M600 features a modified circuitry that guarantees a more dynamic soundstage with deeper bass tone. Like all other Canary products, only highest quality parts and components are used in critical applications. The oversize custom wound power and output transformers are specially designed to handle twice of its power rating, ensuring durability. Two independent chokes are employed for rectifier filtering on each channel. The Muscular Canary: The M600 monoblock power amplifiers are specially designed for optimum sound quality. Deliver high power music at wide dynamic range with ultra low distortion, the M600 is simply the finest amplifier one could desire. Maybe the muscular canary doesn't exist in nature, but if one existed, it might sound something like this amplifier. Special Features: Amtrans AMRG premium carbon film resistors with gold-plated leads. Integrated power circuit with time-delay relay to eliminate turn-on thump. Newly designed high voltage power supply. Rectifier with double choke filtering (two chokes are employed per channel). The input circuit has been redesigned to be faster and more dynamic. Custom EI power transformers. Exclusive machined Delrin 300B tube sockets with gold plated pin receptacles. Specially designed power meter with a custom backlite LED display. 100% handcrafted in California, USA. SPECIFICATIONS Rated Power Output: 50 Watts RMS Input Sensitivity: 0.75 Volts for full output Input Impedance: 150,000 Ohms Frequency Response: +/- 1dB from 10 Hz to 80,000 Hz Total Harmonic Distortion: < 0.2% Signal-to-Noise Ratio: -81 dB below 1 Watt Damping Factor: 14 Power Consumption: 350 Watts (true RMS) Output Impedance: 4, 8 Ohm Tube Complement (per monoblock): 4 x 300B 2 x 6SN7GTB 2 x 5U4GB Dimensions (per monoblock): 12" W x 25.5" D x 9" H Net Weight (per monoblock): 75 lbs
  6. Further Information: Transformers: Canadian-made Hammond transformers, known for their reliable and steady power supply, deliver a full 20Hz-20KHz frequency range, delivering 6 watts/channel. Main Tubes: British-made PX-25 tubes, celebrated for their detailed, rich sound. Additional Tubes: Incorporates 12AX7 and 5R4 rectifier valves for an all-encompassing sound experience. Operates on 8 Ohms, switchable to 4 Ohms or 16 Ohms to match your system's requirements. Hand-assembled by an expert technician with years of experience in valve and sound technology. Designed with the dedicated audiophile in mind, this amplifier delivers an authentic, high-quality sound through its custom design, enhanced by the reliability of Hammond transformers and British PX-25 tubes. The result is a unique sonic signature that uncovers new nuances in your favourite tracks, turning each listening session into a fresh experience. I've found that the PX-25 tube when harmoniously paired with the right equipment, unveils a kind of auditory alchemy that turns each note into pure magic.
  7. I’ve got a Shanling scd-t200c tube CD player that powers up ok but does not operate with a blank display. Technician has replaced IC with no success. Im in Australia, suggestions on if it’s salvageable with another display board or post as is for parts? Otherwise it’s in almost perfect condition. Paul.
  8. Hi, I found this antique valve tester in a country vintage shop and was from a local persons fathers workshop. It powers up although I’m holidaying and don’t have any valves to test. Anyone have experience with these, know how to work them or have anything similar? Included were articles, work records for repairs from 1940’s to 1970’s. Very interesting bunch of items. I’d love to hear anyone chime in.
  9. Hi all, Looking at investing in a tube phono stage to upgrade my project phonobox. I have seen one in the US that grabs my attention which is in my budget of around $1500. Can get it brand new delivered for just under that. Wondering if anyone has any experience with the Aural Thrills Audio, Serenade model which is an all tube phono. http://www.auralthrillsaudio.com/ I would prefer an all tube as all of my other system is tube. Look forward to any advice/suggestions.
  10. Hello Does anyone know where i can get valves tested (beyond just good or bad) ? Looking for a tech with experience and good test equipment. Thank you !
  11. Hi everyone! I've been reading this forum for a while and finally decided to register and create my first topic Finally finished my DIY amplifier project. I always wanted to design a tube amplifier but didn't have much time for it. This project took me about 6 months to finish. It has two power amplifiers inside: a solid state one based on STA540 and a class-A single-ended 6SN7+6V6 tube stereo amplifier. You can switch between 2 amplifiers using a knob on the front panel. The reason of having 2 amplifiers is simple: the device is used as a computer audio amplifier. Most of the time I use it to watch videos or playing games. STA540 is a high-quality power amplifier and it will be more than enough for these purposes. But when you want to enjoy some music (e.g jazz) you can simply turn on the tube amp. Such system can significantly extend tube life. I wanted to use a modern circuitry in the tube amp design. The operating point (cathode currents etc) is precisely controlled by the integrated circuits, while the audio signal only goes through the tubes and high-quality capacitors and resistors. I also used a switch mode power supply which is much smaller and more efficient than classic linear ones. In addition to that, it doesn't have this 50 Hz hum, as the operating frequency is higher than 100 kHz. I know that sometimes it can produce a high-frequency noise, so I used a comprehensive filtering of the output voltages. There is a "magic eye" tube (6E5C) on the front panel for indication, but it's just a nice looking gimmick :). I ordered PCBs in China and it took around 10 days for them to get delivered to my place. And finally, a very important thing: the amp appearance! I used brushed aluminium and jarrah wood as the main materials. The CNC routing was done here, in Australia. I gradually sanded the wood (the last sandpaper was 400 grit) and covered it with 4 layers of transparent lacquer to enhance the natural colour and to protect the wood. I also added copper pipes for steampunk appearance :). The labels on the rear panel were laser engraved. Overall, I'm very happy with this amp and I'm glad that I found some time to finish it. Both amps sound great. I prefer to use the tube one to listen jazz or blues while the solid state one is better (IMHO) for more bassy genres.
  12. I intended using this with my Manley Mahi power amps, but never did, so it has been in storage for a number of years. It was an ex demo unit when I acquired it, so has very few hours on it. 'Tis a thing of beauty and needs to find an owner who will love and appreciate it. It is in its original packaging, with original valves and owner manual.
  13. The Audio Research PH6 Tube phono stage, have to pop the hood to fit the supplied valves, which gives the chance to grab a shot of the innards back on the hifi unit,
  14. Anyone had experience with a LUXMAN SQ-N100 tube amp? I'm looking for a suitable amp for my new Hoyt-Bedford type 1.5 single drive speakers (high effeciency) and this appeals (yes in terms of looks too!) The amp is powered by UL-connected EL84s and comes with a mm phono stage, headphone amp, and three RCA inputs. Perfect for my TT, Tuner, DAC/Mac 10 W at 8 oms per channel Srajan Ebaen, editor of 6Moons, awarded the NeoClassico SQ-N100 the prestiguous "Blue Moon" award : http://www.6moons.com/audioreviews/luxman3/100.html any feedback is welcomed...
  15. Last November, one of the two NOS Tung-sol 6SL7GT tubes in my Audio Space KT88 started making very noticeable interference noise, it later turned into loud screeching noice like a boiling kettle. I have only had them for about 18 months, it seemed to have gone bad too quickly? Naturally I started looking for a new pair of 6SL7s. I thought I had a bad luck with the NOS tubes, this time I got a new pair of Sophia Electric 6SL7 tubes after reading some great reviews. They sounded wonderful and better than the NOS Tung-sol in every area right out of the box. Mmmm maybe except the price, seemed very dear for $200 USD a matched pair for new production tubes, but so worth it. After 2 days, the 6SL7 in the same position started making interference noise, puh puh puh, puh pu put puh! Bad luck again? Lucky there's 30 days warranty. Sent it back, got the replacement. No hassle but a long wait. Got the replacement after nearly 3 weeks. While waiting I put on my spare new production Cryoset Tung-sol 6SL7GTB. After two weeks, new 6SL7 breaking in beautifully until yesterday, which is now 3 weeks since it was new, the same interference noise happened again! Puh puh puh, puh pu put puh! I have tried swapping them out with the Cryoset Tung-sol 6SL7GTB. Am I just having bad luck keep getting a bad tube, or could it be the Audio Space causing the tube goes bad? Should I take my amp for a check up? I was using the Cryoset Tung-sol 6SL7GTB from November to February, and while waiting for the Sophia to arrive, they have not had any problems. With all this bad luck, I did come across some good luck. While swapping out the bad 6SL7, I decided to try out the good NOS Tung-sol with the Sophia Electric 6SL7, and they sounded wonderful together! They give me such great soundstage and I actually like this combination the best! Music sounded so much clearer and more transparent. Instead of describing the sound stage, I have drafted a diagram of my lounge room and I have tried my best not to exaggerate. Could it be possible, just one tube made such a big difference? Rectangle outline = room size Darker grey area = Estimated previous soundstage [ 4x Sophia Electric KT88, 2 x Sophia Electric 6SN7, 2 x Sophia Electric 6SL7] Lighter grey area = Estimated current soundstage [ 4x Sophia Electric KT88, 2 x Sophia Electric 6SN7, 1 x Sophia Electric 6SL7, 1 x NOS Tung-sol 6SL7GT (circa 1950’s from tctubes, no idea if it is a genuine NOS tube)] Is it advisable to use a pair of tubes from different makers oppose to a matched pair from the same maker? Maybe those of you who has more experience in tube amp can give me some advice.
  16. Hi Guys, We are having a GTG listening session at my place in Castle Hill, NSW on Saturday, 13 June 2015 to introduce Redefy ONE, hORNS Mummy and Arte Forma products. Here are some details about the system and speakers : 1. Redefy ONE, 92db 3way stand mount. 2. hORNS Mummy, 94db 2way Floorstander. 3. Arte Forma Thalia 6SN7 Tube Preamp. 4. Arte Forma Due Volte SET 35w with 805 tubes. 5. Esoteric SA-60 SACD. 6. Class D NCORE NC400 in stereo. 7. AudioGD Master5 Solid State Preamp. We thought it would be fun to have an afternoon listening with 2 completely different speakers with possible comparison on high power SET and high power Class D (400w @4ohm) , i personally welcome critique and honest opinion on the system of the day and for the ONE and Mummy specifically . We are aiming to start around 1pm, nibbles, snacks and "moderate" alcohol will be served. The room itself comfortable for 8people but can accommodate up to 12 . BYO music are welcome as i know lots of SNA'ers got a great music collection, as for my demo tracks, it could be somewhere from Trentmoller to Dave Brubeck... Please reply to this thread or PM me to reserve the spot, and we are looking forward to meeting you guys soon Cheers Henry
  17. I'm holding an informal comparison between my Joe-Rasmussen-reengineered EE MiniMax tube phono, Davidro's Jasmine 2.0SE, and ABG's iFi phono, this Saturday, May 9, starting 3pm and finishing 6pm at my place in Bronte. To my very biased ears, the reengineered MiniMax is among the very best phono preamps I have ever heard at any price. For this exercise we are using my Once/PU7/Kleos rig for LO MC, and ABG's classic DD Pioneer P50/Benz-Micro Glider for high output. We'll probably also trial a couple of mats and weights on the P50 to see how they affect the sound. Amplification and speakers are: my JLTi KT-88 Mark 2A as the power amp / Dogé 8 as the preamp / Totem Arro speakers / REL T2 sub. The KT-88 has just been upgraded by Joe Rasmussen from Mark 2 to Mark 2A spec, which is a minor but sonically significant enhancement. We might also get in a 5 minute listen to the latest (Mark 4) mods to my JLTi Oppo 95, and/or 5 minutes of FM on my staggering Joseph-Chow-enhanced Sansui TU-X1 tuner. Anyone who wants to turn up, please PM me for address etc. Responding here if you are interested might also help. I'm limiting numbers to a handful. I'm not supplying beer or wine - you are welcome to bring if you want. Cheers, Warren M
  18. I've got a Manley Stingray integrated amp. While measuring the bias on the EL84 output valves this morning, I came across two valves that were measuring 0, instead of the usual 250mV. Now one of those two is measuring 250 mV, while the other is a smidge high at 260mV. I've adjusted it back down and it seems to be holding fine. Is this something I should be concerned about? Should I replace both valves as a preemptory measure? I've ordered a new set of EL84 valves from Cameron at Krispy audio, as I figured they'll need replacing at some stage. While talking with Cameron, we discussed tube rolling. Cameron suggested the 12AT7 input valves were the only valves really worthwhile playing around with. Can anyone recommend some NOS 12AT7 valves that would suit the Stingray? Does anybody here have any for sale? Is there any benefit to playing around with the EL84 output valves, or the 6414 driver valves? Any advice would be greatly appreciated.
  19. Hi all, I recently purchased a 100w tube amplifier (8*kt66 with a RRP of around 9k) and placed it on a solid piece of furniture of 1.3m wide with a 5cm think top of solid wood. I placed my new 40kg integrated amp to the left and placed my Rega RP3 40cm away on the right, on top of my Marantz CD player. After running the amplifier for a day or so I touched the plinth of my record player and noticed it vibrated. I traced the vibration back to the amplifier. When I then touched the front sides of the amplifier I could feel the entire chassis vibrate….which got me a bit worried. Next I also noticed a hum (like a computer hum) coming from the speakers which I could hear softly but distinctly throughout my 4x5m room - even with the volume all the way down. I then tried unplugging components, checked all wiring, changed power cables etc etc. Also tried a power cord without the ground pin which should rule out a ground loop.. No change. Next I moved the amp to the other side of the house where I run a Pima Luna ProLogue Classic which had no vibration at all. The speakers, PMC DB1, are pretty much dead with the volume all the way down unless you put your ear right up against the tweeter. Then I swapped the Prima Luna for my new amp and experienced the same vibration and hum - with all different cables and components. The amplifier is now back at the distributor and the message I am getting from both the distributor and the retailer is that this sort of vibration and hum are normal / not unusual for this type of amp and that I should start isolating and separating the amp and record player to fix this issue. To check my sanity I rang a few other retailers which sell high-powered tube amplifiers and they told me they would consider this unacceptable and pointed towards a transformer winding issue. One famously said “you pay for music, not noiseâ€. The reply from the distributor was that “retailers will tell you what you want to hearâ€. Great! My stance is that had I known this amplifier vibrated and hummed like this I would not have purchased it and that as such I would like a refund. The retailer seems to disagree. I also understand that vibration of the amp itself negatively influences the sound quality and reduces the life-span of the tubes. I would greatly appreciate your thoughts! Do you think this is normal for this sort of amp? Should I push to get a refund?
  20. Looks like I might find myself in China and Hong Kong in early March for a week on something of a whirlwind grand tour. Never been there before. If I'm lucky I'll have a few hours free now and again. Seeking all recommendations of hifi stores/factories to visit. In particular I'd like to pick up something like a quad set of matched Shuguang 2a3 tubes as a souvenir (for a 20 year old 2a3 push-pull power amp that currently has Billington Golds in it). Is this likely to be cheaper and/or less prone to counterfeits than just buying on the net?
  21. http://www.stereo.net.au/news/cayins-feature-packed-cs-55a-integrated-amplifier Hi Everyone, I am looking for an integrated amplifier with a phone stage and headphone. I am not necessarily after a tube amp but it will look good with my old radiogram cabinet. My first use for the amp will be using it as a pre amp with a Sanders ESL power amp and some Martin Logan's Montis. The next use for it will be as an integrated amp for watching TV and playing music from the network with a set of Audio Physic Yara monitors. The final use for it will be a second setup with an entry level turntable driving a pair of Audio Physics Tempo speakers. The unit having a DAC isn't a must have but quite a "nice to have" since I already have a good quality DAC. I am after a unit that I can move around until I have everything complete to create a second setup for easy listening and background music for the living room. This unit ticks many boxes and desires but I am not familiar with the brand or tube amplifiers and like to hear your opinion.
  22. It has been 3 years since I started my 2 channel sound system. Old system - Budget ~$1000 each component Rega P3-24 (with mods added piece by piece over 2 years) Soundsmith VPI Zephyr Moving Iron High Output cartridge Sutherland Ph3D Battery Powered Phono Stage Audio Space 6IRE KT88 push-pull Integrated Amplifier Castle Knight 4 3-way Floorstand, upgraded to B&W CM8 3-way Floorstand after a year In the last 12 months, I have been slowly upgrading my system piece by piece. The latest acquisition is a pair of second hand Wilson Benesch Square 2 from the wonderful AudioAddict* 3 weeks ago and I couldn't be happier with the speakers. I am very happy now I have a very good analogue setup, for what I can(barely) afford, and I have enjoyed the journey tremendously. I enjoy listening to the music each time I put a record on. I am satisfied with what I have now, with maybe one more component I would like to change. A powerful valve amplifier to match with the WBSQ2. Although the Audio Space's match well with the WBSQ2, I know they are not getting the WBSQ2 to sing as well as they potentially could. A few people have given advice that WBSQ2 works best with a powerful solid state amp, but this is a sentimental choice, I have always wanted a turntable and a tube amplifier, so I will stick with a tube amp. I was also advised to speak to Elson who makes the beautiful Cymer amps but due to my recent expenditures on audio gears, I am broke! I won't have any extra fund for audio for quite a few months and I have a small budget. I am not sure how much a $3000 budget can get for a custom made valve amp, so at the moment I just want to see what other options I have, before I'll do anything. Current system - Budget ~$3000 each component Rega RP8 Shelter 7000 MC + Apheta MC Low Output Cartridge Simaudio Moon 310P Phono Preamp (considering adding the 320S power supply in a far far away future, might also try the drop dead gorgeous Fosgate Signature II Phono Preamp when I get a pay rise!) Audio Space 6IRE KT88 push-pull Integrated Amplifier (to upgrade) Wilson Benesch Square 2 2-way Floorstand Down to the last component, I think it's a little bit trickier now and I would certainly like to choose carefully. I am out of my depth in amps/speakers matching department and have no clues. I tried to read some technical info but I couldn't understand it with my chicken brain, all I can fathom is the impedance and sensitivity of speakers affect the performance. So I need recommendations and the purpose of starting this thread is to get a list of valve amps which will get the juice out of the WBSQ2, get the system amp configuration right, at the same time possibly a valve amp which is aesthetically pleasing, an object of desire to my eyes and within my budget. Only if such amp exists? So if you could, please recommend a valve amp which meets the criteria below, I would appreciate if you could attach a picture if it's your amp, or just something from the internet, I love looking at valve amp porn, especially when they display their tubes: 1. $3000 & under new, preferably used but in great condition for better value. 2. One that would bring out the WBSQ2's full potential. 3. Tubes to be proudly on display, not hidden, no complicated cage. 4. Aesthetically pleasing to my taste, an object of desire. (Simple and clean line, no brutal looking giant amps. Please see pictures for reference) My dream amps for style reference (When I win a lottery...) 1.Audio Note UK Gaku on 2. Airtight AT1S 3. Shindo Corton-Charlemagne80 4. McIntosh 275 5. Ayon - Spirit 6.Audio Research VSi60. 7.NAT- Se2se 8. Traformatic Experience Elegance Australian amps I love. 1. Cymer - 300b 2. Supratek - Mondeuse 5. Preferably available within the Australia (prefer to spend the budget on the amp, not on shipping cost). There are a few amps I have been considering which have been appearing in the classified sections but unfortunately they are not in my preferred styles. Weston Time Machine, JTLi, Mystere, Melody, Icon Audio. What I have in mind, questions and confusion: 1. Should I get a power amp and not an integrated? So it goes Moon phono pre > power amp so I am not doing double pre? I would prefer a simpler setup with less boxes. So if Moon Phono Pre + Integrated is a good setup, I won't be worried about changing it. 2. Should I get a passive volume control/line stage + power valve amp? I would need one power amp with a volume control since the Moon phono pre does not have one. I have only seen a volume control on a higher end valve power amp, it's unaffordable and I have limited the choice and spread my budget on 2 components? 3. Which of the configuration work best? 4. If I were to get a power amp, should I get a mono block? What are their benefits over a single power amp? Is it just more power? 5. Since I am quite happy with the Audio Space, is it more economical to just upgrade the internal parts (i.e: capacitors) like a SNAer suggested to me a few months ago? What specification should I upgrade it to so the Audio Space could drive the WBSQ2 effortlessly? 6. Which type of valve amp should I consider? I would love to experience with other tube amps but it seems push-pull KT88/KT90/KT120 are the more powerful ones so I should forget about EL32, Single Ended 845 etc...? I am not all for the power, I enjoy delicate music too. A balanced system is what I am looking for. Music I listen to: 1. Doof doof electronics - Underworld - Second Toughest In The Infants 2. Quiet electronics - Nils Frahm - Felt 3. Heavier Indie Rock - Arctic Monkeys 4. Beautiful quieter Folksy Indie Rock - Volcano Choir - Repave 5. Melancholic Alternative Rock - Nick Cave & The Bad Seeds - The Boatman's Call 6. Some classical - Recomposed by Max Richter: Vivaldi, The Four Seasons 7. Little Jazz & prog rock 8. No rap or heavy metal *I would like to thank Mr.AudioAddict here not only for the fabulous speakers, also for being such a kind and generous gentleman, making the desision so much easier and the experience breezy and enjoyable. Also thank you Juiceter and Houdinifangs for your generous help.) Specs for AudioSpace 6iRE KT88 Input Impedance: > 100Kohm (RCA) Output Impedance: 4, 8 ohm Output Power: 48W x 2 Class AB2 P-P (Ultralinear) *56W x 2 Max. / 23.5W x 2 Class AB2 P-P (Triode) *28W x 2 Max. Damping Factor: > 5 Frequency Response: 20Hz - 30KHz / -1dB T.H.D.: < 1% 20Hz - 20KHz (Ref. Output) Total Gain: 29dB Input Sensitivity: 300mV-600mV S/N Ratio: > 89dB (Hum Noise < 3mV) Channel Balance: /- < 1dB 20Hz-20KHz (Max. Volume) Channel Separation: > 60dB (1KHz-3.3KHz) Tubes: KT-88 x 4, 6SL7 x 2, 6SN7 x 2 Specs for Wilson Benesch SQ2 Description: 2 Way, true linear phase, ported enclosure with assisted bass radiator. Drive units: 1 x 170mm (7in) Wilson Benesch Tactic Drive Unit. 1 x 25mm (1in) Soft Dome Hand painted Silk, Ultra Linear Wilson Benesch Specific Tweeter. Low frequency loading: Assisted radiator and tuned port at the base of the cabinet. Frequency range: -6dB at 50Hz and 30kHz / -3dB at 60Hz and 25kHz Frequency response: 60Hz to 24Khz +/- 2dB on axis. Sensitivity: 88dB spl at 1 metre on axis. 2.83V Input. Impedance: 6 Ohms nominal, 4 Ohms minimum. Crossover: Second order tweeter crossover. Selected polypropylene capacitors and air cored inductors are used throughout. Crossover frequencies: 5kHz Internal wiring: Multi-stranded, silver plated copper, PTFE jacketed cable harnesses. Soldered connections throughout. Short path PCB design. Input connections: Links supplied for single or bi-wire application. Bi-wireable, in-house machined rhodium plated copper alloy terminals. Power handling: 200W peak unclipped program.
  23. Hi everyone, In your experience, which DACs sound the most euphonic, liquid, lush and smooth? For example, are any of the following very euphonic? Aqua Acoustic Quality La Scala Accustic Arts Tube DAC II Mk2 Audio Horizons TD 3.1 Sv Line Magnetic 502CA Audio Note Kit L4.1 Pathos InTransfer Synthesis Matrix Lab12 DAC1 SE VAC Phi Alpha Tron Seven
  24. Ok, I've done a small amount of research.. What is the best value 300b valve amplifier kit available? Preferably integrated. Cheers!
  25. I read previously that changing the rectifier valve on the Supratek power supply unit can make significant changes in sound quality. In particular, a NOS Bendix 6106 will tighten up the bass. In my case, the standard rectifier and another I tried ( NOS Mullard EZ34) provided deep bass, but it was not as tight as I would like. Well the difference with the Bendix 6106 is profound, in that the bass is as tight as one could hope for ( as tight as a decent solid state setup - and I am using all valves). I have the Supratek Cabernet Dual, and even dialling up the separate bass feed ( I use 6H30's for bass and 101d's for mid-high frequencies through 4 monoblock power amps), the bass became more pronounced but still very tight. So before fiddling with power amps and speakers to optimise bass response, the culprit could well be the choice of rectifier valve in the Supratek preamp.
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