Adcom - To modify or not?

Check out Musical Designs. I have a B&K amp that's just itching for their upgrade.

+1 for Musical Designs. John has upgraded/modded several amps for me over the years and does superb work.

Bryston 4b-sst used on warranty all the way. This product doesn't need any mods and good as-is with superb service if needed.

+1 for Bryston

A modified Adcom will still be an old amp which is not made anymore. Even with the modifications the amp will not have much value on the resale market. I agree completely with Czarivey about the Bryston amp. For 25 years I have used Bryston amps with not a single issue. My current amp is a 3B SST2. The sound is terrific. I would go with a used SST2 which should have a modest price increase over the SST. Bryston feedback and service are outstanding. Don't forget to ask about a transferable warranty. There are often used Bryston 4B SST2 amps on Audiogon. By the way, ask is the 4B has the current upgrades.

there often are used

+2 for Bryston

4bsst would be a better choice; parasound a21 is nice as well.

Interestingly, I'm using an Adcom 535ii right now and it sounds pretty decent (better than I remember my 545 sounding). I bought a used Bryston 4bst 3 weeks ago but one channel was not working correctly so its been in the repair shop for 2 1/2 weeks now. Hopefully its done soon! I haven't even heard it yet.