I respectfully disagree with Tvad that Radiohead is recorded "hot." I think their recordings are amazingly well conceived and engineered, in the vein of all great Brit-pop. Especially "In Rainbows." I think you need a very musical system that can reveal the intricacies found in their recordings.
System synergy is a big part of all this. I'd venture that the Adcom amps coupled with the BWs are a lot of the problem--the grain combined with the brighter BW sound is probably not the best match. You'd want a more laid back speaker or a more refined amp. McCormack, Pass, Classe as mentioned earlier are all great choices. High current would be best to get you the bass and resolution you'd want from your favorite recording artists you mention.
I agree that the preamp could also be part of the problem. So many of the early 90s preamps are aggressive/forward sounding, perhaps due to their design and due to decline of caps simply due to age.
System synergy is a big part of all this. I'd venture that the Adcom amps coupled with the BWs are a lot of the problem--the grain combined with the brighter BW sound is probably not the best match. You'd want a more laid back speaker or a more refined amp. McCormack, Pass, Classe as mentioned earlier are all great choices. High current would be best to get you the bass and resolution you'd want from your favorite recording artists you mention.
I agree that the preamp could also be part of the problem. So many of the early 90s preamps are aggressive/forward sounding, perhaps due to their design and due to decline of caps simply due to age.