@ Larry - I found it on eBay; I did a specific search, it wasn't selling. I've owned one before. I pretty much ran all volumes - Discover, PW50 channel and master volumes at top levels and didn't get any distortion. The Discover piano was very sharp and I had to put treble at 9 o'clock and bass at 3 o'clock, but them all sounded well. I may be sell it, if you're interested...

@Graham - I've owned two pair of CM30's at different times and liked & used them until I bought my Bose Compact. Surprisingly, I like the sound of the PW50 better than a pair of CM30's. The Roland's have a tendency to distort at higher volumes, not the Pw50. Bass response on the Roland may be slightly better, but not enough to make a difference. Controls and channels are pretty much the same. I used my CM30s in a NH situation and feel confident I could use my one PW50 to do the job of two CCM30s.