I was looking for this earlier and couldn't find it. I've recently bought a Marantz 2225 and a Marantz 2285B, and I'd love to see a complete list of the 22XX lineup. I have no idea how many of them there are, but maybe a knowledgeable person here could list them all or post a link to a list of them all. Also, any details about differences between them all would be helpful and interesting. I saw that there's a 2220 and a 2220B, and I wondered if there are distinct differences between units with a B on the end and units without it, such as in the internals or the years they were produced. I imagine there's more than one 22XX collector somewhere on Audiokarma who knows every little nuance of all of these receivers. Also, feel free to share which one is your favorite and why.