2. amps-preamps
  3. 134710-89202

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.
128x128rvpiano

Showing 1 response by coppy777

coppy777
27 posts
 
Hi Folks...

Need to correct almarg and raindance about those grid resistors.  I was in touch with Jeff Fischel, now heading up c-j, about those PV-11 grid resistors.  Apparently the sources the previous posters used were wrong. Here is his reply to me:

"Bob,

 Actually on all 3 of these models we do employ grid resistors on all gain stages , typically a 47R5 resistor. All CJ preamps use grid resistors either 47R5 , 100R or 332R.

 Thanks,

 Jeff Fischel

conrad-johnson design inc.

703-698-8581

http://www.conradjohnson.com/"


Guess doing it correctly is one reason their equipment consistently sounds so good.




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