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Tube rolling Question

Hello Tube Rollers
I recently bought my first tube preamp (Blue Circle 21.1). I've noticed I am need of new tubes as the tube whoosh is considerably more noticeable now than 6 months ago. The amp comes with  Electro-Harmonix 6sn7 tubes which I appreciate and dig the sound. I will certainly replace these with a the gold pin model as I like the sound profile. Here's my question:

What other tubes might you recommend for a different "flavor" of sound, and just to have fun with. I am a poor audio guy so please no recommendations for tubes that will cost more than preamp. 

Thanks in advance. 
128x128birdfan
wolf_garcia
6,734 posts
 
I have a pile of 6SN7GTBs as my amp (uses one) and preamp (four) use 'em. From new Tung Sols (these seem to require some break-in but do eventually sound reasonably neutral) to NOS GEs, Sylvania "chrome domes," possibly re-badged Amperex tubes that still sound fabulous (my Dennis Had amp was supplied with one of those and yeah...its internals are exactly like other non Amperex tubes) etc, and they're all relatively inexpensive and plentiful. You simply have to experiment to see what sound floats yer boat.
jburidan
803 posts
 
I like the EH 6SN7 but gold pins offer no advantage IMHO.
petg60
1,486 posts
 
Hi,
my friendly advice would be to seek vintage soviet 70's era 6SN7 tubes, your preamp was designed with russian tubes so most likely will sound the best with same kind but from different era. Normally this is the case no matter how much tube rolling we do. 
geoffkait's avatar
geoffkait
23,365 posts
 
Ideally a particular amp design should be totally Tube brand independent. All 6SN7s have the same electrical characteristics. Unless you wish to ascribe Golden Ear status to the Ruskies. I will eat a bug if ANY Sylvania or RCA or Tung Sol 6SN7 doesn’t sound a lot better than ANY Soviet 6SN7.
petg60
1,486 posts
 
Hi geofkait, most probably and ideally they should sound better but if synergy comes to the mix they will probably don't. As for golden ear status please be open minded and open eared, no biases in audio, try, try, try and try. The best example is in the E88CC family where the finest sounding ones (and a lot cheaper) are 6N23P from the 70's by far. This is my experience after trying every possible NOS (still having more than 300). Most NOS are a waste of time (educated though), money should be spent on LP's.
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