video upload by Edward Jones
via this eBay listing
Pics of the inside below.
"For sale we have the very rare Korg MS-04!
These don’t come up for sale very often.
This is a modulation expression pedal.
It features an LFO (Triangle or Square), a noise generator, and a "bender" type control voltage output, controlled by this sturdy foot switch.
The pedal controls the magnitude of the CV output of the LFO, not the frequency of the LFO.
There is an upward facing LED on the pedal body that shows you the speed of the LFO.
This is in honest to goodness as new condition. The internal date stamp indicated manufacture to be the 6th week of 1980 (which matches the manufacturing period).
There is some light dust on the pedal after being in storage for 20 years, and I haven't cleaned it off. The only blemish is on the front plate indicating model number, where a price tag was placed in the late 1990s when it was purchased by the current owner. I haven't attempted to de-goo it.
One side appears to still have the original protective plastic on it.
All components are original! The tested capacitors have held their values, and the pots were all clean. It has been stored with no batteries inside, and the battery bay, as you can see, is clean as a whistle."
