Mine's a SCPH-1001 and it sounds wonderful. Must be left continuously on. Takes some time to break in - about 5 days. There are downsides to this giant-killer. No display, mine has problems with some CD-R's, controller only allows play and next track. There are mods to tweak the laser voltage and intensity - which helps the tracking problems, and an audio output section mod that removes a transistor and electrolytic cap from the circuit. I haven't tried these yet.