I still have my original Adcom GFA-535 and GTP-400 I bought new years ago. The sound is pleasant, unoffensive, and listenable - much better than any receiver available at the time. Comparing it to a modern design reveals that the combo's highs are rolled off with fuzzy imaging and hardly any depth of field. The GTP-400 is the weak link but as a starter system or for music in the kitchen you could do much worse.
Wayne