ADCOM GTP 500 vs GTP 500 mk ll?

This takes me back years. I used to ow. A GTP500II. at the time I bought it the GTP500II just came out and the dealer still had stock of the GTP500. 

I called Adcom to ask about the differences. The only difference as I could recall was being told that there was a new supplier for the display and a few other components. Sonically, no difference. 

I owned my GTP500Ii perhaps 20 years. Never had any issues with it at all. 

Still own my mkII 27 years later.  No reliability issues.

Rich 

Sold my GTP500II a while back after owning both the models for many years…both great sounding well made preamps. Had another preamp with balanced outs later (forget the model) and it was also sweet. Upgraded to other items over the years, but Adcom made excellent and reliable (for me anyway) stuff.