2. amps-preamps
  3. 1236808120

Opinions on vintage cj amps and Teflon cap mods

I'm seeking opinions on having a vintage amp modified/updated. While I'm enjoying my conrad johnson Premier V as is, I can hear some significant differences when compared to some of the more modern amps I've heard. In my opinion, the sound I'm getting from my system is too soft, particularly the leading edge of notes and the upper base/lower mids. Decay, air, ambiance and overall musicality are great IMO. conrad johnson is offering modifications to the Premier 4&5 amplifiers which would include a new power supply and Teflon capacitors. What's crucial to me, is that I'm looking to improve the amplifiers performance, not just change it. The cj person I talked with said they've modified a couple of the Premier 4s with "smashing success". Thanks in advance for your experiences and opinions.
phaelon

Showing 2 responses by paulzero

paulzero
9 posts
 
Hi Phaelon,

A "new" power supply in a 1984 vintage amp would make one heck of a difference, detail would probably improve along with more bass definition and solidity, along with better control over all. The new coupling caps will help too, but you've got a ton of output tubes (8 EL34's) so trying some other tubes might be another avenue, but I would go for the power supply and cap upgrade and see where you stand.

This can't be cheap though, and you really have to like the amps in their present state to spend more $$ on them.

Improved performance is a sticky issue, since the amps performance (output power, bandwith, stability) are a function of the circut to a great extent. The fact that CJ is doing the work is a big plus. Good luck.

Regards..Paul
paulzero
9 posts
 
Hi Phaelon,

Good point about not wanting to "loose the magic" -- just because CJ feels the teflon caps are an improvement, doesn't mean you'll like the sound of the so called upgrade. It might be better to go with an independent like Bill Thallman and do the changes one at a time. Upgrade the power supply, check it out. Then do the capacitors this might be the way to go. Regards...Paul
More to discover