stereonomono - Hi Fi Compendium - 13 years on-line: Pioneer SX-550
Pioneer SX-550 Stereo Receiver | Reverb
Gravity Records - $OLD: Pioneer SX-550 Receiver Fresh off the bench is this fully serviced Pioneer SX-550 receiver. This unit had the dreaded arcing power switch that most of the SX-x50
Pioneer SX-550 | Tapeheads.net
Stereo Receiver SX-550 Radio Pioneer Corporation; Tokyo, build | Radiomuseum