Fezz Audio Mira Ceti 300B

[ThoFi]

Recently I bought a used Mira Ceti 300B.

Its manufactured in Poland and came with Electro Harmonix 300Bs and 6SN7.

The unit has no hum or noise and sounds neutral.

its my 2nd 300B amp besides the Willsenton R300.

Hopefully others will enter and share there experiences.
 

 

Edited March 3, 2024 by ThoFi

[ThoFi]

 

 

[ThoFi]

Till now I only have new production 6SN7 tubes, such as Electro Harmonix, TAD, Tung Sol.

300Bs I has the new production Electro Harmonix and the 300B Willsenton branded 300Bs.

Playing with them and try to find the best match

[ThoFi]

The Mira Ceti has 2x6SN7 and 2x300Bs. 
No tube rectification and only 2x6SN7s at the pre amp section.

Any tube recommendations?

[ThoFi]

A 6SN7 comparison…

 

 

[ThoFi]

Comparison between the Mira Ceti and the Willsenton R300.

 

 

 

[ThoFi]

Is it possible to use 12AU7s+converter instead of 6SN7s at the Mira Ceti?

It works at the Willsenton R300.

 

[douxreveur131]

Hello.

 

Extraordinary amplifier FEZZ Audio Mira Ceti that I also own. But in France, its distribution remains very confidential and the FEZZ brand is still little known here.

And no doubt its owners are more music lovers than audiophiles.

I talked about it on this French forum here (harmonique131 - with Firefox) :

 

http://forum-hifi.fr/thread-32155.html?highlight=FEZZ+Ceti

Edited March 4, 2024 by douxreveur131

[ThoFi]

On 4/3/2024 at 4:36 PM, douxreveur131 said:

Hello.

 

Extraordinary amplifier FEZZ Audio Mira Ceti that I also own. But in France, its distribution remains very confidential and the FEZZ brand is still little known here.

And no doubt its owners are more music lovers than audiophiles.

I talked about it on this French forum here (harmonique131 - with Firefox) :

 

http://forum-hifi.fr/thread-32155.html?highlight=FEZZ+Ceti

Hello,

I read the french thread.

what tubes do you use?

maybe you can share your current experiences here?

 

thanx

 

Edited March 6, 2024 by ThoFi

[ThoFi]

A 300B tube comparison 

 

 

Edited March 6, 2024 by ThoFi

[ThoFi]

 

[ThoFi]

Yesterday I listened to the Willsenton branded 300B tube in my Fezz Mira Ceti. They sounded very good.

At the weekend I will compare them in more detail with the EH 300Bs.

[cafe67]

On 04/03/2024 at 12:18 AM, ThoFi said:

The Mira Ceti has 2x6SN7 and 2x300Bs. 
No tube rectification and only 2x6SN7s at the pre amp section.

Any tube recommendations?

Having a look around online - valves these days seem scarcer, more expensive and from less manufacturers- seems alot of the NOS  valves aren't around anymore 

[ThoFi]

4 hours ago, cafe67 said:

Having a look around online - valves these days seem scarcer, more expensive and from less manufacturers- seems alot of the NOS  valves aren't around anymore 

thats why I also would like to try my 12AU7 with adapters instead of the 6SN7s.

any risk to use them in Mira Ceti layout?

[xlr8or]

7 hours ago, ThoFi said:

thats why I also would like to try my 12AU7 with adapters instead of the 6SN7s.

any risk to use them in Mira Ceti layout?

 

You should be fine Thomas. The amp has no bearing with this tube substitute on this occasion as the 12AU7/ECC82 tube with a 6SN7 tube adapter can work in place of the 6SN7. If you're looking for 6SN7 tubes my strong recommendation is to look for locally available tubes and preferably vintage ones. Plenty of good ones available on eBay Kleinanziegen and eBay de.

Edited March 8, 2024 by xlr8or

[Demondes]

Here is a review of Ray 6Sn7 tubes.  Just an alternative

 

 

[ThoFi]

What are your experiences with Electro Harmonix 300Bs?

[Demondes]

1 hour ago, ThoFi said:

What are your experiences with Electro Harmonix 300Bs?

I have used the same EH 300b in my monoblocks (2 per monoblock in SE mode), and they sounded great until I tried some Western Electric 300b (new not the original), but the EH are good, I would experiment with the 6SN7 first.

[ThoFi]

5 hours ago, Demondes said:

I have used the same EH 300b in my monoblocks (2 per monoblock in SE mode), and they sounded great until I tried some Western Electric 300b (new not the original), but the EH are good, I would experiment with the 6SN7 first.

Many thanx.

I asked because I was surprised that the Willsenton branded 300B sound also very good compared to my EH300B. 
I don’t know the usage of them.

[douxreveur131]

Hello everyone.

 

I also did a comparison between the Willsenton 300b and Electro-Harmonix tubes.

 

Personally, I really preferred the Electro-Harmonix tubes. I found their power of analysis truly superior and I loved their ability to bring analysis but always with a little warmth to human voices. As for 6SN7 tubes, the ones I use are PSVANE Black Treasure CV181-Z. I really like them for their fluidity and naturalness. Unfortunately, production of these tubes has now been stopped.

 

I would love to try the Psvane CV181-T-MII/2/6SN7GT but they are expensive. The Linlai ELITE E-6SN7, which gives such good results in my Musical Paradise DAC, would also be worth a try, but we can bet that the result will be less warm and that the analysis will be pushed further than with the 'Electro-Harmonix tubes.

I don't know about the Apos Ray 6SN7 Select tubes. They look like the 6SN7 PSVANE HIFI Classic series.

 

It is therefore a question of both the overall balance of the audio system as a whole and personal preference in choosing between these different references.

 

My personal opinion is that 6SN7 tubes are probably the best preamplifier tubes. Better, in my opinion, than the 12AU7.

 

 

 

Edited March 12, 2024 by douxreveur131

[ThoFi]

2 hours ago, douxreveur131 said:

Hello everyone.

 

I also did a comparison between the Willsenton 300b and Electro-Harmonix tubes.

 

Personally, I really preferred the Electro-Harmonix tubes. I found their power of analysis truly superior and I loved their ability to bring analysis but always with a little warmth to human voices. As for 6SN7 tubes, the ones I use are PSVANE Black Treasure CV181-Z. I really like them for their fluidity and naturalness. Unfortunately, production of these tubes has now been stopped.

 

I would love to try the Psvane CV181-T-MII/2/6SN7GT but they are expensive. The Linlai ELITE E-6SN7, which gives such good results in my Musical Paradise DAC, would also be worth a try, but we can bet that the result will be less warm and that the analysis will be pushed further than with the 'Electro-Harmonix tubes.

I don't know about the Apos Ray 6SN7 Select tubes. They look like the 6SN7 PSVANE HIFI Classic series.

 

It is therefore a question of both the overall balance of the audio system as a whole and personal preference in choosing between these different references.

 

My personal opinion is that 6SN7 tubes are probably the best preamplifier tubes. Better, in my opinion, than the 12AU7.

 

 

 

Jean-Louis,

 

many thanks for your feedback! 

At my comparison between the Willsenton 300Bs vs EH 300B I used new production TungSol 6SN7. With this 6SN7s the EH300B do sound a little too bright at the top end. 
I don’t know if in general the EH300Bs has the tendency to sound a little too bright.

I will do further comparisons with different combinations.

Luckily the Fezz only has 2 pairs of tubes 

(also with some 12AU7 - I hope they do not harm the 300Bs , the amp)

 

I would be very interesting to see the results with the Linlai at the Mira Ceti.

 

KR, Thomas

 

 

[douxreveur131]

Hello everyone.

 

Concerning the Linlai E-6SN7 Elite series tubes, you can consult this forum which specifically discusses these tubes and compares them with the best NOS. It is considered by many to be the best 6SN7 currently produced :

 

https://forum.audiogon.com/discussions/linlai-e-6sn7-tubes?page=16

 

These tubes require a very long break-in, ideally at least 250 hours, before making a judgment on its musical qualities. But then you are rewarded with a truly beautiful midrange with very high transparency. But the midrange presents a discreet warmth, very far from a tube like the EH 6SN7. The general tendency is rather towards clarity, but without any harshness.

 

The fact remains that the price is high. You will read that there are two ways to obtain them. One intended for the international market (Linlai Global) and the other, those intended for the Chinese market. In Europe, BTB Germany offers the latter, cheaper than the export version and it is through this very serious seller of tubes that I went to buy mine intended for my Musical Paradise MP-DX DAC (a marvel, this unfairly little-known DAC , especially in Europe).

 

Linlai claims that the sound balance of these two versions is different, one suitable for Western music and the other for Chinese music. But many people on the forums are convinced that it is in fact the same tube, sold much more expensively for the international market. This can be justified, however, by probably much more demanding sorting for this version.

 

https://linlaiglobal.com/index.php/product/linlai-global-elite-e-6sn7-vacuum-tubes-pair-or-single/

 

https://linlaiglobal.com/

 

I also point out that the 300b EH tube presents absolutely no hardness on my system.

 

Thomas, I suggest if you wish, to send me a private message in which you will explain to me what you use as a mains cable for your amplifier, as a modulation cable between the amplifier and your network player and also the cables that you use between the amplifier and your speakers.

 

Finally, note for the most demanding, that Linlai Elite produces a magnificent 300b, but they are very expensive! ($1000 per pair; excluding tax and shipping. I haven't checked the cost of the Chinese version).

 

Edited March 13, 2024 by douxreveur131

[ThoFi]

3 hours ago, douxreveur131 said:

Hello everyone.

 

Concerning the Linlai E-6SN7 Elite series tubes, you can consult this forum which specifically discusses these tubes and compares them with the best NOS. It is considered by many to be the best 6SN7 currently produced :

 

https://forum.audiogon.com/discussions/linlai-e-6sn7-tubes?page=16

 

These tubes require a very long break-in, ideally at least 250 hours, before making a judgment on its musical qualities. But then you are rewarded with a truly beautiful midrange with very high transparency. But the midrange presents a discreet warmth, very far from a tube like the EH 6SN7. The general tendency is rather towards clarity, but without any harshness.

 

The fact remains that the price is high. You will read that there are two ways to obtain them. One intended for the international market (Linlai Global) and the other, those intended for the Chinese market. In Europe, BTB Germany offers the latter, cheaper than the export version and it is through this very serious seller of tubes that I went to buy mine intended for my Musical Paradise MP-DX DAC (a marvel, this unfairly little-known DAC , especially in Europe).

 

Linlai claims that the sound balance of these two versions is different, one suitable for Western music and the other for Chinese music. But many people on the forums are convinced that it is in fact the same tube, sold much more expensively for the international market. This can be justified, however, by probably much more demanding sorting for this version.

 

https://linlaiglobal.com/index.php/product/linlai-global-elite-e-6sn7-vacuum-tubes-pair-or-single/

 

https://linlaiglobal.com/

 

I also point out that the 300b EH tube presents absolutely no hardness on my system.

 

Thomas, I suggest if you wish, to send me a private message in which you will explain to me what you use as a mains cable for your amplifier, as a modulation cable between the amplifier and your network player and also the cables that you use between the amplifier and your speakers.

 

Finally, note for the most demanding, that Linlai Elite produces a magnificent 300b, but they are very expensive! ($1000 per pair; excluding tax and shipping. I haven't checked the cost of the Chinese version).

 

many thanks for all the information about the Linlai tubes.

 

I wouldn’t say that the EH300B did show hardness. With my mentioned combination the high frequencies are just more present and not my favorite liking. 
 

I will send you pm about the cables!

thanxs!

[ThoFi]

On 12/3/2024 at 4:24 PM, ThoFi said:

Jean-Louis,

 

many thanks for your feedback! 

At my comparison between the Willsenton 300Bs vs EH 300B I used new production TungSol 6SN7. With this 6SN7s the EH300B do sound a little too bright at the top end. 
I don’t know if in general the EH300Bs has the tendency to sound a little too bright.

I will do further comparisons with different combinations.

Luckily the Fezz only has 2 pairs of tubes 

(also with some 12AU7 - I hope they do not harm the 300Bs , the amp)

 

I would be very interesting to see the results with the Linlai at the Mira Ceti.

 

KR, Thomas

 

 

TAD 6SN7s + EH300B

do sound better than

TungSol 6SN7s + EH300B

 

[ThoFi]