Why the difference in resale value?


The Adcom GFA-555 and the Onkyo Integra M-504.  Two relatively close-in-price power amplifiers that emerged in the mid 80's to critical acclaim from the audio press. The asking price for the used Onkyo on sites like ebay is frequently higher than its original MSRP; for the Adcom, not nearly as often.  Why is that?  
rwp2694u
I suspect the meters have a lot to do with it. Gorgeous. The Adcom is just a black box. And I've noticed that many people buying older gear want not just sound, but appearance.

Plus, Integra was Onkyo’s high-end line, like NAD Masters or Sony ES. Adcom is . . . Adcom, a value-oriented manufacturer often offering very good sound. (I owned a GFA-555 and enjoyed the heck out of it.)
Could be influenced by brand name recognition too.  Just about everyone (even outside of the audio world) have heard of Onkyo...not so much with Adcom.