2. amps-preamps
  3. 1303178491

Preamp Suggestions to replace a CJ PV-12AL

I'm looking for suggestions on what route to take in replacing my Conrad-Johnson PV12-AL tube preamp, not having anywhere near the expertise of the members here.

I drive a Classe CA-150 amplifier and Snell D speakers, with an iMac as a digital source and Apple Lossless encoded source data via optical cable into the preamp via a so-so DAC (Keces).

I'm very interested in the Classe CP-800, if it will ever come out so that I can listen to it. I'm also thinking about a McIntosh C50, but am wondering if it would be worth the extra $1500 over the CP-800 (the local audio shop guy says CP-800).

I've also considered getting a better DAC, which would open up many other preamp options.

Thoughts? Opinions?? Anything would be greatly appreciated.
erickjmichel

Showing 2 responses by erickjmichel

erickjmichel OP
3 posts
 
Thanks! I talked to Bob, and I might go this route. Which mods did you do? He has a dynamic linearity mod, cap replacement, and two power supply mods.

This leaves the question of what DAC to use, though. Any suggestions? I'll check out the forums.

Oh, and I was looking for an upgrade, not necessarily a new sound. There could be some harmonics with certain tubes when they hit a certain age.
erickjmichel OP
3 posts
 
Just an update for those that recommended doing the RHB mods. I went with both the circuits and the power supply/Vcap mods (including an iec receptacle for a new Synergistic Research power cable), and it sounds spectacular! The irritating issue I had with the CJ is totally gone after the mods. I dived back into the tube world again, buying a tube tester to get deeper into tube rolling. Which brings me to another question. I've tried some RCA clear tops, and Telefunken smooth plates - any tubes I have to try for the C-J with mods?

Anyway, thanks for the advice - you were right!
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