jacob@psyche.mit.edu (Jacob Feldman) (10/17/90)
I have never heard the Audio Advisor mod to the adcom amp, but I have had bad experiences with the company (assuming it is the same as the mail order accessories place)-- c.f. an earlier controversy about them in this forum which is not worth rehashing. On the other hand, my Adcom GFA-555 was modified by Musical Concepts, and I am delighted with the results. Much more "musical", smoother top end (much smoother-- the amp no longer has that Adcom glare), better soundstaging, better bass, you name it, it's better. A bargain at twice the price. -jacob