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Advise on Consonance Cyber 20 suitable tubes.

post #1 of 8
12/25/11 at 4:04pm
Thread Starter 

Hello,

 

     I have just bought an Opera Cyber 20 headphone amp. I will use it with a Grado RS-2 headphones to listen, mainly, to Rock and Jazz music. Love the full and round bass sound and the extended soundstage.

 

     With all the previous information, I would like to leverage a bit your experience with this amp. I plan to play a bit with "tube rolling", but I am an absolute newbie to this tubes in general and tube rolling in particular and prefer to have a quality starting point that allows me to play a bit having a safe bet.

 

     Which tubes would you recommend me for the previously described combination?. 

 

     Many thanks for your advise. Best regards,

 

Iván.

 

 

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post #2 of 8
3/3/12 at 10:35am

I have the cyber 20b, which is the same amp with no separate power supply. By all indications, it sounds the same as the 20. I also have RS2i cans. I initially used the Ei EL 84's, (yugoslavia), but have found the genalex gold lions to offer a more balanced presentation, smoothing out the upper register and tightening up the bass.

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post #3 of 8
3/3/12 at 11:45pm

I also have the cyber 20b. I'm using a Raytheon 5814 which I recommend highly. A nice, laid back, lush yet detailed sound. I have also used RCA cleartops 12au7, these are cheap and widely available. But these have a more pronounced high end and are very forward. Still quite musical though.

I was using the stock russian el84 tubes, but now I've got a hold of NOS RCA blackplate EL84s. Very nice. 3-D soundstage and a slightly laid back sound combined with deep black background and nice detail.

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post #4 of 8
3/4/12 at 12:31am
I have found a Mullard CV4003 on the input and a pair of 1967 vintage Russian Philips EL84s to work extremely well.
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post #5 of 8
4/19/12 at 12:13pm

Thanks for the tube tips... I'm about to get my 20b upgraded to remove mains hum and maybe some of the other internal organs... ?

 

Best

 

James

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post #6 of 8
4/20/12 at 12:39am
Does anyone have recommendations for upgrading the coupling caps? The stock ones look like Solens. I was thinking of switching to Audio Note PIOs or Mundorfs.
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post #7 of 8
5/25/12 at 11:54pm
Quote:
Originally Posted by jamescodway View Post

Thanks for the tube tips... I'm about to get my 20b upgraded to remove mains hum and maybe some of the other internal organs... ?

Best

James

May I ask what you did to remove the mains hum (and whether it was effective)?
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post #8 of 8
5/26/12 at 10:57am

Hello... not yet actioned. :-(

 

I will report back as soon as there is a result. Current preferred headphone partner srh940 doesn't hum too loudly with it... This is totally mt go to amp at the moment. It is so strange. After 4 years of being a bit 'meh', suddenly, it has produced magic with dt250 and srh940. Could be my ears of course!!!

 

Best

 

James


Edited by jamescodway - 5/26/12 at 10:59am
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