Help I've Been Robbed

Well, not me thankfully. But my Dad, who I can blame for my hifi habit and who turned me on to more music than anyone else on earth. He is a music lover who owns a machine shop and loves to listen while he works. Last week someone broke in and stole his Harmon Kardon receiver and cd changer. (They also took computer equipment, some tools, etc.). My sister and I would like to buy him replacements for Christmas. I'd like to find a good quality receiver that will drive four speakers and a cd changer. Anyone with ideas (Adcom? Rotel? Other?) or equipment they would like to sell? Thanks!