via this auction
Extend the sonic palette and functionality of a Kimball Challenger P5 Synthesizer with these hard to find Challenger MusicPro program cards! Simply swipe a card through the MusicPro reader on a P5 synth & open the door to new possibilities. This auction includes 5 MusicPro card packets (17 cards total) that span 4 program categories. 2 Rhythm section packs that contain a total of 8, 2-sided cards (1 side for the drum pattern, the other for bass & chord accompaniment), 1 pack of 4 Effects section cards, 1 pack of Synthesizer section cards containing 4, 2-sided cards (1 side for the oscillator, the other for the filter settings), & 1 Special Features "Magic Preset" card which automatically selects a solo voice for each rhythm. Also with a little experimentation, you can coax even more sonic variety from the 2 sided cards by selecting the VCO from one synth card & the VCF from another or by trying the bass & chord accompaniment from one with a different drum pattern from another of the rhythm cards. Cards have been tested and work with a fully functional Kimball Challenger P5 keyboard."
It would be amazing if you could scan these for archiving purposes.
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