What is your price range? There are better amps for sale here on Agon. For example, look at the Kinergetics KBA-75 amps for sale. I am also going to sell mine if interested. You can get two of these class A amps for $1200 or one for $600 from Katli Audio. I own the amp and it was equal to the Rowland M-112 and gave up nothing to the Specton Musician II amp. The amp was rated B by Stereophile but adding a better power cord really made the amp sing. It is much more musical and dynamic than the two amps you are considering and can drive anything.
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.