I dunno, about 18"x18"x6" or so. It's the JVC RX-3TH, to be exact. It was my first receiver that I bought back in '97 and featured Dolby Pro-Logic but did NOT have a sub-out, so you'd be running just 5 speakers. Still, it's better than just running 2 speakers or t.v. speakers, although I guess space is really tight for you though, and your neighbors would end up hating you like they did me...