Guitar-Amp
About the Guitar-Amp PCB
Guitar-Amp is an open source PCB design by james-wren, published on GitHub under the MIT license. It is a 2-layer board measuring 184.5 × 61 mm, with 28 components from 19 distinct parts.
Other key parts include the L7809 and LM386n-4. By type, the board carries 11 capacitors, 10 resistors, 3 diodes, 2 ICs and 2 transistors.
It belongs with the audio designs in this gallery.
From the project
A 4 inch and electric guitar amplifier using the LM386n-4 and J201 JFETs
The board is designed to use only THT components to save money as it can ban easily soldered with basic tools, to aid in the easy assembly parts are also spread out over a almost 200mm width. Components start on the left with the 1/4 inch jack input, wrap around the top, and end on the right with the speaker output. It is mounted to the case using m2 screws.
Main components on the Guitar-Amp
Guitar-Amp bill of materials (BOM)
28 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L7809 | TO-220-3_Vertical | U1 |
| 1 | LM386n-4 | DIP-8_W7.62mm | U2 |
| 2 | J201 | TO-92 | Q1, Q2 |
| 2 | 5.1v | D_A-405_P7.62mm_Horizontal | D1, D2 |
| 1 | 1N4007 | D_DO-41_SOD81_P7.62mm_Horizontal | D3 |
| 1 | 6.8N | C_Disc_D3.8mm_W2.6mm_P2.50mm | C1 |
| 1 | 10n | C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C2 |
| 3 | 47n | C_Disc_D3.8mm_W2.6mm_P2.50mm | C3, C4, C7 |
| 2 | 10uF | C_Disc_D6.0mm_W4.4mm_P5.00mm | C5, C6 |
| 1 | 220uF | CP_Radial_D10.0mm_P5.00mm | C8 |
| 1 | 100uF | C_Radial_D10.0mm_H16.0mm_P5.00mm | C9 |
| 1 | 470uF | C_Radial_D16.0mm_H31.5mm_P7.50mm | C10 |
| 1 | 100nF | C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C11 |
| 2 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R6 |
| 2 | 2K2 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2, R8 |
| 3 | 6K8 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R7, R9 |
| 1 | 47K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4 |
| 1 | 22K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5 |
| 1 | 10R | R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal | R10 |
Guitar-Amp design files
The KiCad project lives in the james-wren/Guitar-Amp repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/guitar_amp.kicad_pcb
- Schematicpcb/guitar_amp.kicad_sch
- BOMBOM.csv
Guitar-Amp: common questions
How big is the Guitar-Amp PCB?
The Guitar-Amp measures 184.5 × 61 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Guitar-Amp?
28 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Guitar-Amp design files?
From the james-wren/Guitar-Amp repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Guitar-Amp design in my own project?
Yes, under the terms of its MIT license, which james-wren chose for the repository.
Similar boards
OtterCastAudioV2
Ottercast
50 × 49.3 mm216 parts4LMIT665
FunBox
GuitarML
59.7 × 67.5 mm63 parts2LMIT278
Eurorack pmod
apfaudio
35 × 110 mm116 parts4LCERN-OHL-S-2.0239
XassetteAsterisk
SdtElectronics
56 × 56 mm137 parts2LCERN-OHL-W-2.0229
AddOnC
freeDSP
380 × 45 mm97 parts2LCC-BY-SA-4.0222
AddOnA
178 × 39 mm55 parts2LCC-BY-SA-4.0222