2 layers40.3 × 128.5 mm
2 layers40 × 100 mm
A simple buffered mult
- Size
- 40 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 44
- Pads
- 114
- Tracks, vias
- 189, 1
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Feb 2026
- Updated
- 9 Mar 2026
Overview
Mult is an open-source printed circuit board by a-lange, from the a-lange/Buffered-mult repository on GitHub. It is a 2-layer board of 40 × 100 mm with 39 parts on 44 nets, routed with 189 tracks and 1 via.
Its parts include 17 connectors, 15 resistors, 4 capacitors, 2 diodes and 1 IC.
README
README.mdThis is a buffered mult, made in Kicad for 8HP format.
It is tested, and works.
For now there is a few minor issues:
- power connector is too close to the edge, so it overhangs a tiny bit. So use an unkeyed pin-header and note that -12v(red stripe) is towards the edge of the board.
- GND is missing on the top jacks, easily patched manually.
The front panel is reversible, the back has a simpler layout with no logo, text or copier.
Use it however you like.
The text says 'copier' in Norwegian, and the creature on the bottom is the friendly "ullmann"(wool-man).
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | PCM_4ms_Jack:EighthInch_PJ398SM | J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16 | |
| 12 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 |
| 2 | 0.1uf | PCM_4ms_Capacitor:C_Disc_P5.08mm | C2, C4 |
| 2 | 10R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R15, R16 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C3 |
| 2 | 1N5819 | PCM_4ms_Diode:D_DO-41_P7.62mm_Horizontal | D1, D2 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R13 |
| 1 | Eurorack_Power_10pin_Unshrouded | PCM_4ms_Connector:Pins_2x05_2.54mm_TH | J17 |
| 1 | TL074 | PCM_4ms_Package_DIP:DIP-14_W7.62mm | U1 |
Questions
How big is the Mult PCB?
It measures 40 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mult use?
39 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Mult KiCad files?
From the a-lange/Buffered-mult repository on GitHub, at the commit this page was made from: the board is mult.kicad_pcb and its schematic mult.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mult design in my own project?
Its repository states no licence, so its author keeps all rights: ask a-lange before reusing the design.
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