If you could find yourself some 80's Sony int. amps which say "Legato" and "ACT" in excellent sonic/cosmetic condition, go for it. I picked up an Sony AX-6 (which has "Legato/ACT") and its an extremely fine sounding amp. (Paid $110 inc. s/h., because it's was in MINT/As new condition w/OBM. I was apprehensive at first about paying so much, but once I heard its musical capabilites, no regrets whatsoever.) For another system, have the AX-44 (which says Legato, but not "ACT") and its a really fine amp as well. Both int. amps have screw down spk. wire terminals which will accept bare wire. My 70's Kenwood Ka-7100 is the same way. I also owned a Mac Ma-5100 in the past. Very nice and smooth sounding amp, but you'll end up paying around $300 used. For that kind of $ I'd personally would buy something else. (A used Kora Explorer Si-90 is superb sounding and in my experiences w/moderate priced int. amps. under $1800, is a wonderful choice.) You might consider an new Nad C-350/370 int. amp as well.( NorthCountry Audio, www.cadencebuilding.com might have a new C-350. www, saturdayaudio.com was advertising new C-370's for under $400, I believe,) However, sonically, I don't believe they will be as musical as a Kora. Lolo is right about vintage receivers. For the $, the right ones have superb tuners and sound really nice. (Bought two Kenwood KR-2120 on E-bay for $10 apiece! One was in perfect sonic/cosmetic condition. Other one was in Exc. condition.) They'll be in use for many years to come as will the Sony's I'm sure. Good luck in your search.