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Question for tube aficionados

I have a vintage Conrad-Johnson PV 11 preamp.
 I’ve always re-tubed it  with the cheapest tubes from Tube Depot (e.g. Electro-Harmonix 12AU7 and 12AX7, Sovtek 5751 and the like.). I’ve been very happy with the sound.
 My question is:
 Would it be worthwhile to spend more money on more exotic tubes?
  Would there be any appreciable difference in the sound?
 I’m powering the system with NuForce Reference 9 V3 monoblocks.
rvpiano
twoleftears's avatar
twoleftears
5,327 posts
 

@schubert Very interesting, makes a lot of sense, and explains the situation.

@rvpiano Have you ever thought about stepping up to the Bel Canto Ref600M's?  From everything I've read, they could be your dream amps.

schubert
7,386 posts
 
At the risk of being a homey .The BelCanto 600M's are only class D I would consider .
durk. Most Bugle Boys sold are fake .
snapsc
687 posts
 
It seems that the Telefunkens and Amperex are different enough so as to require an either/or choice. Some have said that the Telefunkens and Amperex are no better than new tubes like the psvanes... has anyone compared all three side by side?
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rvpiano's avatar
rvpiano OP
2,821 posts
 
Right now, I’m very happy with my NuForce Reference 9 V3’s.
And they’re a few thousand less than the Bel Canto.
 I know there is extreme predjudice against class D.
But you have to hear the NuForce to render an informed opinion
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