via this auction
"Kurzweil 250 RMX, 6U rack version of the K250 keyboard, with all four soundblocks. This is the classic instrument developed for Stevie Wonder and used by all the top film composers through the '80s and '90s, for example the Lethal Weapons series. I believe Paul Shaffer still plays the keyboard version on the David Letterman show, but if not he did for years. The K250 was originally $20,000 by the time you added all the options (which this has). When they came out with the RMX, it was one of the first rack versions of a keyboard nobody wanted to carry around... The audio quality is just impeccable, with XLR transformer balanced outs, a very high internal sample rate, and a massive power supply inside - I'd estimate the weight of the unit to be 50 pounds. Kurzweil later released some of the K250 sounds in the 1000 PX series, but the 250 has all of them and sounds considerably bigger.
Poor cosmetic condition - missing knobs, broken sliders - Unit DOES light up and produce sounds."
SN 87030020
