2. amps-preamps
  3. 1343235357

Conrad Johnson PV10A Mods/upgrades

Hey everyone..

I'm looking to get both my CJ PV10a preamp and MF200 solid state amp refurbished and upgraded. I've read several recommendations for Bill Thalmann and Bob Backert... who both seem to do excellent work! I was hoping to reach out to you all and see if anyone could chime in and help me decide who to go with? I'm leaning towards Bill Thalmann as he was technical director for 25 years at Conrad Johnson.. Any advice would be greatly appreciated! Thanks!
128x128joethekid72
lloydelee21
1,202 posts
 
Hi Joe,

I have to imagine both are excellent. I have spoken with Bob Backert, and the Pres of the Philadelphia Audiophile Society who spoke extremely highly of him. I have owned CJ for a dozen straight years now, and Bob seems like a very knowledgeable person to me.

Meanwhile, a 3rd alternative is to go back to CJ. They often will do 'custom upgrades'...i know someone had Teflon capacitors put into his Premier 8s!!!

Ed in Service at CJ is amazing.
sabocat59
98 posts
 
Bob modded out my CJ MF2250 and it sounded much better. I'm still trying to decide whether or not to send my PV-15 to Bob or to CJ for the cap upgrades. Tough decision. Bob's version will no doubt be superior, but it will cost more as well.
czbbcl's avatar
czbbcl
1,752 posts
 
I believe the 10A can be upgraded to a 10B by cj......

Chuck
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
I haven't had any work done by Bill Thalmann, so I cannot speak for his work. I have had Bob Backert work on a BAT VK-75SE amp and the results were stunning to say the least. I would highly recommend his work.
More to discover