[MWSVette]

I have the Siemens CCa's and the Telefunken CCa's. Presumably the best of all 6922's, no?

There is no best - to me Siemens CCa sounds the same as Siemens E88CC we are talking equally testing tubes.
To other people it sounds better.

Siemens CCa is a top tube no doubt but I can name at least 5-10 better in my book, so it is all based on what you can find and how well it fits your overall system and sound signature preference

Agreed. Depends most on personal preference and system.

Do love my CCa's...

 

[ostewart]

Quick question for you 6922 tube rollers. I have the Feliks Audio Espressivo, and am still trying to find the right combo.

I have the stock tubes, 6N1P-EV dated 86 I think, which are a nice linear sounding tube.

I then got some 6N23P Voskhod's which were lusher and worked well with my Amirons at the time.

I have since moved to Grados and can't get it right,

I got a pair of these: https://www.langrex.co.uk/products/e88cc-tesla-goldpin-nos/ and although the mids are lush, they lack sparkle.

Any suggestions for a more neutral sounding tube, I know I could go solid state but I love this amp, and it has been with me for a couple of years and works really well with quite a few headphones.

 

[kolkoo]

Quick question for you 6922 tube rollers. I have the Feliks Audio Espressivo, and am still trying to find the right combo.

I have the stock tubes, 6N1P-EV dated 86 I think, which are a nice linear sounding tube.

I then got some 6N23P Voskhod's which were lusher and worked well with my Amirons at the time.

I have since moved to Grados and can't get it right,

I got a pair of these: https://www.langrex.co.uk/products/e88cc-tesla-goldpin-nos/ and although the mids are lush, they lack sparkle.

Any suggestions for a more neutral sounding tube, I know I could go solid state but I love this amp, and it has been with me for a couple of years and works really well with quite a few headphones.

If you bought these exact tubes pictured then they are actually Siemens A-Frame 1970s 1980s (depending on what it says on the metal plate we can tell which year they are from) . Funny thing my experience with these Siemens is that they are more on the analytical side with an almost harsh high end and very slightly lushier mids, but my pair was early 1970s.

 

[HeavenNotes]

Quick question for you 6922 tube rollers. I have the Feliks Audio Espressivo, and am still trying to find the right combo.

I have the stock tubes, 6N1P-EV dated 86 I think, which are a nice linear sounding tube.

I then got some 6N23P Voskhod's which were lusher and worked well with my Amirons at the time.

I have since moved to Grados and can't get it right,

I got a pair of these: https://www.langrex.co.uk/products/e88cc-tesla-goldpin-nos/ and although the mids are lush, they lack sparkle.

Any suggestions for a more neutral sounding tube, I know I could go solid state but I love this amp, and it has been with me for a couple of years and works really well with quite a few headphones.

Hello

I have Grados's and my best sound is with my Mac Book Pro a silver USB cable and my Tube Amp with my CCs gem. You will never regret it the investment.

 

[Oscar-HiFi]

If you bought these exact tubes pictured then they are actually Siemens A-Frame 1970s 1980s (depending on what it says on the metal plate we can tell which year they are from) . Funny thing my experience with these Siemens is that they are more on the analytical side with an almost harsh high end and very slightly lushier mids, but my pair was early 1970s.

I did buy those exact tubes. Interesting they are Siemans. The mid range is beautiful but they lack some sparkle (to be honest I've only given them a couple of hours use so far) - do you think it would be good to run them in, or try and sell them on?

I am back using the stock driver tubes (6N1P-EV), with some better power tubes: http://www.ebay.co.uk/itm/331621071562?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

With the stock tubes, no lack of treble but it's not overly detailed.

 

[LouisArmstrong]

I use four Siemens CCa's on my Cavalli Liquid Fire. People say that the amp does not actually produce the tube sound and it is what I am hearing as well - just a very clear natural sound. I know nothing about its circuitry but would it be a waste for 4 Siemens CCA's to be put in it?

 

[Oscar-HiFi]

I use four Siemens CCa's on my Cavalli Liquid Fire. People say that the amp does not actually produce the tube sound and it is what I am hearing as well - just a very clear natural sound. I know nothing about its circuitry but would it be a waste for 4 Siemens CCA's to be put in it?

It would be a waste of my money

More than the amp cost me... trying the keep the costs down.

I could run other tubes, like 6SN7 with adaptors to be honest.

 

[MWSVette]

I use four Siemens CCa's on my Cavalli Liquid Fire. People say that the amp does not actually produce the tube sound and it is what I am hearing as well - just a very clear natural sound. I know nothing about its circuitry but would it be a waste for 4 Siemens CCA's to be put in it?

The CCa's are some of the best vintage tubes you can get in 6DJ8 family. However, if you cannot hear the difference buy the least expensive tubes that you can find that have a sound signature you enjoy....

 

[LouisArmstrong]

Thanks dudes - Compared with the 12AX7s on my McIntosh, I am not hearing as much difference between 6922 tubes. My C2300 preamp is currently served by a pair of vintage Goldlion B759 12AX7s. Not even the vintage Marconi tubes, the legendary Telefunken 803S or the gold pin 10M Mullards can touch them. Not even close. The difference is big. Maybe it's because I am using the CCa's on a headphone amp and the 12AX7s on a speaker system, that may be why the difference is much more prominent on the 12AX7's. Sylvania 12AX7s always have a special place in my heart though. The bass is just so good.

 

[HeavenNotes]

Thanks dudes - Compared with the 12AX7s on my McIntosh, I am not hearing as much difference between 6922 tubes. My C2300 preamp is currently served by a pair of vintage Goldlion B759 12AX7s. Not even the vintage Marconi tubes, the legendary Telefunken 803S or the gold pin 10M Mullards can touch them. Not even close. The difference is big. Maybe it's because I am using the CCa's on a headphone amp and the 12AX7s on a speaker system, that may be why the difference is much more prominent on the 12AX7's. Sylvania 12AX7s always have a special place in my heart though. The bass is just so good.

Using the T1 the difference is huge. CCs is earth to heaven compared with my other tubes.

 

[winders]

Using the T1 the difference is huge. CCs is earth to heaven compared with my other tubes.

Nice pair for sale here:

https://www.head-fi.org/f/threads/fs-siemens-halske-cca-matched-pair-nos.851910/

 

[ostewart]

I just posted a review up of the iFi Audio NOS 6922 tubes: https://www.head-fi.org/f/showcase/ifi-audio-nos-6922-valves.22541/reviews#review-18909

 

[winders]

I just posted a review up of the iFi Audio NOS 6922 tubes: https://www.head-fi.org/f/showcase/ifi-audio-nos-6922-valves.22541/reviews#review-18909

Those General Electric 5670 tubes are not a very good example of 5670 tubes. I would recommend you getting some 5670 to 6922 adapters and trying NOS Western Electric 396A (D Getter) tubes or NOS
General Electric 5670WA (5 Star, Triple Mica) tubes. Both are far better than the tubes iFi has chosen.

 

[ostewart]

Those General Electric 5670 tubes are not a very good example of 5670 tubes. I would recommend you getting some 5670 to 6922 adapters and trying NOS Western Electric 396A (D Getter) tubes or NOS
General Electric 5670WA (5 Star, Triple Mica) tubes. Both are far better than the tubes iFi has chosen.

Thanks for the feedback, I would love to try them but I have no money these iFi ones are good enough for now

 

[yangian]

Those General Electric 5670 tubes are not a very good example of 5670 tubes. I would recommend you getting some 5670 to 6922 adapters and trying NOS Western Electric 396A (D Getter) tubes or NOS
General Electric 5670WA (5 Star, Triple Mica) tubes. Both are far better than the tubes iFi has chosen.

I got a pair 396A and I agree they are great. But you are misleading when you claim GE5670 is not very good. 5670s are only $4 on ebay, and 396As usually is more than 10 times price than 5670! Don't we expect 396A to be better? Actually compared to 5670, their price cannot justify their sound quality.