B&K vs Adcom – opinions please


I 'm looking to put together a 2-channel system with used mid-90s gear – either an Adcom GFA545 amp/GTP500II preamp-tuner or a B&K ST1400 amp (non-series II)/AVP1000 preamp-tuner. Each setup costs about the same. They will be used to drive a pair of bi-wired floorstanding 2-way speakers with 10” drivers and ribbon tweeters. I am looking for tight and full bass, good soundstage, and accurate highs for day in and day out listening. I listen to a range of music – jazz, rock, classical, vocals. I’d appreciate opinions on which amplification setup will give me better sound. Thanks for your help.
harpodog
My post was based on my own personal tastes and experience. My ST140 is one of the first few "iron core" transformer amps that put out 70 WPC hence the moniker ST140. Shortly after, B&K went to a toroid and upped the WPC to 105. The original 535 was rated at 60 WPC but well exceeded that rating. The two amps were very similar in output, but each one did some things dfferently. The little 535 was an amazing product in it's finesse. It made my Magnepan SMGa's really bloom in a small room. With a new retail of 395.00 in early 1988 when I bought it, it was a best buy IMO. My only beef with it were the cheesy speaker connectors. The B&K at 495.00 was also a hell of a deal, very well built but a little more forward sounding, for me, as I stated. I still have 2 of them: the original 70 WPC in my son's system, and the later generation 105 WPC in my second system. I wish to hell I had kept BOTH the 535 and those sweet little SMGa's.
I have the original ST-202 and had it modified shortly after buying it.The sound is totally different than the stock version whereas the forward biasing cleared out the grain or glazed sound that I could really live without.

I had listento the Adcom GFA-555's,I believe they were,and the thing that they exceled at was bass impact,but the mids and high's were to dry for my liking.

I also have an AV-2500II that I am using for 3 channels ,but am not as impressed with it's performance.That being said I will also have it modified and might try a vertical amp setup using modified B&K's.

Here is a better way to go, pick up a Classe CA-100 amp for around $650 and Classe CP-35 for $400At about a $1000 this would be more musical than any Adcom or B&K could ever be! and for a few hundred more you could get a Classe CA200! check it outGood Luck
Do not know how it goes against a modified B&K.Adcom I would only buy if I needed a cheap amp for Bass driver's.

Was considering Classe,but I would rather get a Monarchy ClassA amp that is close in performance to Pass Labs amps.

JMO
I have Apogee Centaur Major and for many years used them with Adcom GFA-565 monoblock in bi-wire configuration and 565 preamp. These combo worked very well and I was happy. Then I changed amps for Classe DR 10. The sound completely different - warmer bass extanded and sound much loader I had to decrease my volume for at list half of what I used before. I don't have yet good preamp at the moment but think that I will get Classe and it would improve the sound even better.
Evelyn