mooster Posted August 1, 2014 Posted August 1, 2014 Item: Cyrus Mono X Power Amps (1 pair)Location: Perth W.APrice: 1700 onoItem Condition: ExcellentReason for selling: Upgraded AMPPayment Method: Pickup - Cash, Paypal, COD OnlyExtra Info: BoxedPictures: See attached I have for sale a pair of Cyrus Mono X in silver. Great amps and in excellent condition. I purchased these 4 years ago from Cyrus re processed range. Apparently they were used at the Bristol show and the put through the production line and re packaged, so in effect Brand new. You can check Cyrus website if need more information. They have been good solid amps and never missed a beat (no pun intended) and served me well. The only reason I'm selling is because I need more power for my speakers. I'm sure they will serve someone well. Here's the information from the website Technical InformationThe X-series has been the most demanding product range developed to date by Cyrus. Over many months the team applied their established skills in taking a technically excellent amplifier design, and through incremental listening tests worked to achieve a natural and extended soundstage with outstanding bandwidth. The Mono X power amplifier is packed with a long list of features including the famous Cyrus ‘zero-feedback’ circuit topology (delivering outstanding power with exceptional load tolerance), a massive power supply with many stages of voltage regulation and a sophisticated computer control system offering intelligent circuit protection, convection control to maintain the temperature of the amplifier within safe limits and local bus communications with other Cyrus components. • The harmonic distortion character of the Mono X is closely aligned to the response of the human ear. As output level reduces to lower levels where the ear becomes most sensitive to these effects, the distortion produced by the Mono X falls below measurable limits the result is exceptional musical resolution. • Power amplifiers have two primary tasks - i.e. voltage and current amplification of the input signal, to provide a large and powerful signal for the loudspeaker. Traditionally, in most power amplifiers, these functions are combined into one overall circuit topology. The Mono X splits these functions into dedicated circuits - the input voltage gain amplifier and the output current amplifier. The voltage gain amplifier uses a zero feedback complementary bootstrap cascoded 'class A' buffer which drives a precision resistor. The current developed in driving the resistor is mirrored in to another precision resistor which is 52 times greater in resistance. The voltage developed across the second resistor is 52 times greater, hence voltage gain. This voltage gain operation is buffered by a second zero feedback complementary bootstrap cascoded 'class A' buffer. The current amplifier is an error corrected bipolar emitter follower designed to drive equally well into all impedances. In the Mono X neither of these stages have any global feedback. The current amplifier completely isolates the precision voltage amplifier from the loading effects of the speaker. This arrangement enables the Mono X to preserve fine detail, even under the most arduous of dynamic conditions. ElectricalInputs - RCA phono or XLR balancedOutputs - Twin BFA (bi-wire) connectors, RCA Chain outPower Supply - 330VA Toroidal transformerCommunications - MC-Bus™ System Bus SpecificationsContinuous Power - 150W (into 8 Ohms) 240W (into 4 Ohms)Burst Peak Power - 1500WDistortion - <0.004%, (1kHz into 8 Ohms) <0.05%, (20Hz-20kHz into 8 Ohms)Frequency Response - -3 dB at 0.5Hz and 130kHzSlew rate - 700V/µS (filters bypassed)Max output Current - 80 Amps peak to peakSensitivity (RCA input) - 380mV (for 50W into 8 Ohms)Sensitivity (RCA input) - 660mV (for 150W into 8 Ohms)Sensitivity (BAL input) - 775mV (for 50W into 8 Ohms)Sensitivity (BAL input) - 1.3V (for 150W into 8 Ohms)Input impedance - 19Kohm (RCA), 20Kohm (BAL)Chain Output voltage - 660mV (for 660mV RCA or 1.3V BAL input)S/N Ratio - 114dBADimensions - (H x W x D) 73 x 215 x 360 (mm)Weight - 5.5kgFinish – Quartz Silver or Brushed Black
Guest VinceA Posted August 1, 2014 Posted August 1, 2014 Hi there, i was looking at a pair of Cyrus mono blocks recently here in Melbourne. Are these the same as the current model which i listened to (Cyrus x-power) which were run with a Cyrus pre-dac QX. If i was keen could we organise to ship to Melbourne? Cheers Vince
mooster Posted August 1, 2014 Author Posted August 1, 2014 Hi, I believe these are the ones above the X power in the range. I would be happy to send to Melbourne by courier. Please look at the website to confirm what I'm saying. These are not the brand new mono x they are selling now. These are the 150w per channel ones. Hope that helps a bit.
keyboardman_uk Posted August 3, 2014 Posted August 3, 2014 GLWTS! I've got the PSX-R in silver for sale so there is a Cyrus bonanza going on! Woo hooo! 1
mooster Posted September 25, 2014 Author Posted September 25, 2014 Have been away for last month and just want to say these for still for sale, if any interested. They are great amps. Just not enough for me new speakers
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