All jumper blocks are numbered starting with pin 1. Horizontal jumper block pins are numbered from left to right, vertical blocks are numbered from top to bottom.
| Component | Setting | Value | Comments |
| U8 | Installed | 2732 | 4k Tom sample |
| U9 | Not installed | - | - |
| Jumper A | Connect 1 to 4 | wire | Set VCA envelope response |
| Jumper B | Connect 1 to 3 or not installed | wire | Don't care |
| Jumper C | Connect 2 to 4 | wire | Enable EPROM U8 on all triggers |
| Jumper D | Connect 2 to 3 or not installed | wire | Don't care |
| Jumper E | Connect 2 to 3 | wire | Sound length = 4K |
| Jumper F | Connect 3 to 4 | wire | Sound length = 4K |
| Jumper G | Connect 2 to 3 | wire | External CV controls pitch |
| Capacitor C1 | Installed | 0.0033uF | Sets nominal sample rate |
| Capacitor C3 | Not installed | - | Sets VCF envelope decay time |
| Capacitor C4 | Installed | 6.8uF | Sets VCA envelope decay time |
| Diode D1 | Installed | 1N4148 | Trigger 1 reduces pitch |
| Diode D2 | Not installed | - | Trigger 1 reduces volume |
| Diode D3 | Installed | 1N4148 | Trigger 2 reduces pitch |
| Diode D4 | Not installed | - | Trigger 2 reduces volume |
| Diode D5 | Installed | 1N4148 | (not used) |
| Resistor R4 | Installed | 10K | Trigger 1 pitch change depth |
| Resistor R5 | Installed | 33K | Trigger 2 pitch change depth |
| Resistor R7 | Installed | 4.7K | (Not used) |
| Resistor R8 | Not installed | - | Sets VCA control |
| Resistor R9 | Not installed | - | Trigger 3 has no effect on VCA envelope | Resistor R11 | Installed | 2.7K | Sets VCA envelope modulation amount | Resistor R12 | Installed | 4.7K | VCF tracking control | Resistor R13 | Not installed | - | VCF control |