2 layers74.9 × 152.4 mm
OAM Time Machine
patamari/4U-OAM-Time-Machine
4U port of the Olivia Artz Modular Time Machine + the Timo Rozendal expander
94 parts1
2 layers37.2 × 34 mm
Guitar preamp
dwmorrin/guitar-preampHigh impedance guitar preamp with variable 0 to 33 dB gain.
- Size
- 37.2 × 34 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 17
- Pads
- 73
- Tracks, vias
- 97, 2
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Mar 2026
- Updated
- 2 Aug 2026
Overview
Guitar preamp is an open-source printed circuit board by dwmorrin, from the dwmorrin/guitar-preamp repository on GitHub. It is a 2-layer board of 37.2 × 34 mm with 26 parts on 17 nets, routed with 97 tracks and 2 vias.
It is built around the TL071HID, UWP1V100MCL1GB and MCT06030C2004FP500, with the KGM15ACG2A101JM, MCT06030D1002DP500 and 112APCX among its other parts. Its parts include 9 resistors, 8 capacitors, 4 connectors and 1 IC. It belongs with the audio and music boards of this library.
Main components
10
TL071HID
SOIC-8-20V~-2.25V、2.25V~20V -40℃~+125℃ 0.5pA 1 105dB 1mV 1pA 20V/us 26mA 2uV/℃ 37nV/√Hz@1kHz 4.5V~40V 5.25MHz 960uA Short-Circuit Protection、EMI filtering/RF suppression SOIC-8 FET Input Amplifiers ROHSTexas InstrumentsOperational Amplifier
UWP1V100MCL1GB
SMD,D6.3xL5.4mm-40℃~+85℃ 1000hrs@85℃ 10uF 29mA@120Hz 35V Non-polarized ±20% SMD,D6.3xL5.4mm Aluminum Electrolytic Capacitors - SMD ROHSNichiconAluminum Electrolytic Capacitors - SMD
MCT06030C2004FP500
0603Chip Resistor - Surface MountVishay IntertechnologyKGM15ACG2A101JM
-Multilayer Ceramic Capacitors MLCC - SMD/SMTKyocera AVXMCT06030D1002DP500
06030603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount112APCX
--20℃~+65℃ 3A 48V Brass Tin - Audio Connectors ROHSSwitchcraftAudio ConnectorsRN73R1JTTD1001F25
0603-55℃~+155℃ 100mW 1kΩ 75V Thin Film Resistor ±1% ±25ppm/℃ 0603 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface MountRT0603DRE102K2L
0603-55℃~+155℃ 100mW 2.2kΩ Thin Film Resistor ±0.5% ±50ppm/℃ 0603 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface MountRT0603FRE1347KL
0603-55℃~+155℃ 100mW 47kΩ Thin Film Resistor ±1% ±50ppm/℃ 0603 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface MountRQ73C1J49R9BTD
0603-55℃~+155℃ 150mW 49.9Ω 75V Thin Film Resistor ±0.1% ±10ppm/℃ 0603 Chip Resistor - Surface Mount ROHSTE ConnectivityChip Resistor - Surface Mount
README
README.mdGuitar Preamp Module
High impedance guitar preamp with variable 0 to 33 dB gain.
Default bipolar power configuration can be changed to unipolar power with jumper cuts.
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100n | Capacitor_SMD:C_1206_3216Metric | C3, C5, C6 |
| 3 | 10u | Capacitor_SMD:C_Elec_6.3x5.4 | C1, C7, C8 |
| 3 | 2M | Resistor_SMD:R_0603_1608Metric | R1, R2, R8 |
| 2 | 100p | Capacitor_SMD:C_0603_1608Metric | C2, C4 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1, JP3 |
| 1 | 112APCX | project:SWITCHCRAFT_112APCX | J1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 2k2 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 49R9 | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | GND | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP1 |
| 1 | Gain Pot | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | Header | Connector_IDC:IDC-Header_2x08_P2.54mm_Vertical | J2 |
| 1 | Header | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP2 |
| 1 | TL071H | Package_TO_SOT_SMD:SOT-23-5 | U1 |
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Questions
How big is the Guitar preamp PCB?
It measures 37.2 × 34 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Guitar preamp use?
26 parts, built around the TL071HID, UWP1V100MCL1GB, MCT06030C2004FP500 and KGM15ACG2A101JM. 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 Guitar preamp KiCad files?
From the dwmorrin/guitar-preamp repository on GitHub, at the commit this page was made from: the board is guitar-preamp.kicad_pcb and its schematic guitar-preamp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Guitar preamp design in my own project?
Its repository states no licence, so its author keeps all rights: ask dwmorrin before reusing the design.