Casio CTK-3000 - KEYBOARD - piano, organ, synth, sampler - musical instruments - by owner - sale - craigslist
Best Buy: Casio Portable Keyboard with 61 Full-Size Touch Response Keys CTK3000
Casio CTK-3000 keyboard | Bloke's Post
circuit analysis - Can I convert my old Digital MIDI Keybaord Casio CTK 3000 into a MIDI device, which gives only midi output - Electrical Engineering Stack Exchange
Lot 304: Casio WK-3000 76 Key Digital Recording Studio Styled Keyboard w/Stand & Chair | EstateSales.org