I have been a Marantz receiver fan since my first one (2240B) back in the '70s. Over the past few years I've been able to acquire the following (in no particular order): 2215B, 2230, 2230B, 2235B, 2238, 2240B (2), 2250, 2250B (2), and a 2270. Almost all of these are hooked up to speakers and are...