new amp vs old amp


i bought a acurus a150,i also have a dynaco st120,very different amps!one circa 1970 the other 1990'ish.ive done brief a/b testing,swapping them back and forth.my problem,i hear very little difference.why?do i need to listen longer?ive always though i had a good ear,i can here light notes and quiet backround instruments in music that most people cant!!!whats wrong
ampzilla747

Showing 1 response by rhn1rn

I'd like to share my expierences in changing audio pieces or cables. This may seem strange but I've run across this many times. On occasion when auditioning a different piece of gear or cable I would hear either subtle or no difference. But when I would put the original piece or cable back in my system is when I would realize the different characteristics of the piece or cable that I had taken out of the system. This may not seem to make any sense but for me it has become part of my auditioning pratice. Perhaps I don't have the golden ears others have, or I wish I had. ----->Ray