Midi Thru
| Ref | Value | Description | Qty |
| C1, C2, C3 | 0.1uF | Ceramic capacitor | 3 |
| C4 | 47uF | Electrolytic capacitor, 25V, 105deg | 1 |
| D1 | 1N4148 | Small signal diode | 1 |
| D2, D3, D4 | 1N4004 | Rectifier diode | 3 |
| J1 | 2-pin, male | IDC header | 1 |
| J2 | 10-pin, male | IDC header | 1 |
| J3 | 3-pin, male | IDC header | 1 |
| JK1, JK2, JK3, JK4, JK5, JK7 | 5-pin, female | DIN socket | 6 |
| JK6, JK8 | AC/DC | Power jack socket | 2 |
| R1 | 10K | Resistor, ceramic, 0.25W, 5% | 1 |
| R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 | 220R | Resistor, ceramic, 0.25W, 5% | 11 |
| U1 | 74HC14N | Hex inverter | 1 |
| U1 | DIP14 | IC socket | 1 |
| U2 | LM7805 | Voltage regulator | 1 |
| U3 | 6N137 | Opto-isolator | 1 |
| U3 | DIP8 | IC socket | 1 |