The following is a list of MidiBox Projects, and the crystals required to operate them.
| Module | Frequency of Crystal | Number of Pins | Type of device |
|---|---|---|---|
| Core | 10MHz | 2 pins | Crystal |
| SID Module | From Core | N/A | PWM pin |
| OPL3 Module | 14.318 MHz | 4 pins | Oscillator |
| IIc SpeakJet | 20Mhz | 2 pins | Crystal |
| POKEY -NTSC | 1.79MHz | 4 pins | Oscillator |
| POKEY -PAL | 1.77MHz | 4 pins | Oscillator |