CASIO DG1/10/20 The DG stands for DIGITAL GUITAR in case you had not guessed and you are likely to find all of the above models on Ebay though the DG1 is a rarity (there are others!!) and the other two...
Casio MT 540/CT460 The MT540 is a mini-keyed stereo "tone bank" 4 octave keyboard which judging by its heritage uses PCM [Pulse Code Modulation] sound sources. The manual indicates that it suffices also...
Casio MT500/520 Both of these models are mini-keyed 4 octave PCM (Pulse Code Modulation) stereo keyboards sporting built-in drum pads. The main differences being that the 520 supports more drums and has...