I'm going off photos here / what people say they have so, I'm not entirely sure how accurate I am.
I've seen a CP70 with what looks to be the on switch on the front panel and not the side like a CP70B. Then, I've seen people selling 70(B?)s, with the harp shaped like those of CP80s, which are asymmetrical / more angled. Then some 80s that have knobs and not sliders.
Long story short, I think there is variation and about the only reliable thing is asking for the model / whether it has the balanced outputs. (I think the 80 has more than 2? Or midi?) But then again, when I was looking to buy one, the guy was clueless about the difference, told me it wasn't a CP70B (which would have been a complete deal breaker). But couldn't pass up the chance. Crawled under to see the model / serial number... Now I'm its proud owner!
Anyway, can you post pictures or a link? Perhaps I can be of better help.
Edited by WeatherTheLizard (11/13/09 11:08 PM)
Kimball 4520, Yamaha CP70-B, Yamaha PSR-150