2 layers100 × 80 mm
2 layers350 × 200 mm
Deep field preamp
DeepFieldAudio/Deep-field-preamp-V16the deep field preamp is a 4 way preamp. It features 4 way crossover with kill and volume, 4 band parametric EQ, 12 band graph EQ, phono and line inputs for music, 2 aux input, 1 mic input and 2 FX loops
- Size
- 350 × 200 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 699
- Nets
- 319
- Pads
- 1,530
- Tracks, vias
- 3,014, 90
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Jul 2026
- Updated
- 18 Aug 2026
Overview
Deep field preamp is an open-source printed circuit board by DeepFieldAudio, from the DeepFieldAudio/Deep-field-preamp-V1 repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 350 × 200 mm with 699 parts on 319 nets, routed with 3,014 tracks and 90 vias.
It is built around the NE5532, RC4558D and B10K. Its parts include 230 capacitors, 217 resistors, 51 connectors, 36 ICs and 11 switches. It belongs with the audio and music boards of this library.
Main components
3
NE5532
SOP-8-22V~22V 0℃~+70℃ 100dB 10nA 14mA 2 40V/us 42mA 4mV 800nA 8nV/√Hz@30Hz Built-in compensation SOP-8 Operational Amplifier ROHSSungineOperational Amplifier
RC4558D
SOIC-8-15V~-5V、5V~15V 0℃~+70℃ 1.7V/us 2 2.5mA 200nA 3MHz 500nA 6mV 8nV/√Hz@1kHz 90dB Built-in compensation SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational AmplifierB10K
RES-TH_RK10J12E002LTH-3P SMT ROHSJLCPCB AssemblyUncategorised
README
README.mdDeep Field Preamp V1
A 4-way DIY dub preamp — open source, free, and built to be modified.
Features
- 4-way crossover with kill switches and level control per band
- 4-band parametric EQ
- 12-band graphic EQ
- Phono and line inputs for music sources
- 2 aux inputs
- 1 mic input
- 2 FX loops
Project status
| Item | Version |
|---|---|
| Schematic / PCB source | V1 |
| Schematic PDF | V1 rev2 |
| Gerbers | V1.2 |
Note: the source files, the PDF and the gerbers currently carry three different version labels. If you are ordering boards, treat
production/v1.2/as the authoritative set and check it against the source before committing to a run.
Repository layout
hardware/ KiCad 9 project — schematic, PCB and project file
docs/ Schematic PDF and build documentation
production/v1.2/ Gerbers and drill files, ready to send to a fab houseBuilding one
- Order the boards. Upload
production/v1.2/deep-field-preamp-v1.2-gerbers.zipto your fab house of choice — it contains the gerbers, both drill files and the job file. - Get the parts.
- Open the design.
hardware/deep-field-preamp.kicad_proopens in KiCad 9.0 or newer. The schematic is also indocs/as a PDF if you just want to read it.
Contributing
If you find a mistake I made, or a way to improve the design, please open an issue or a pull request — I would rather have it fixed in the open than in someone's private fork. And if you build your own Deep Field, share it! I would love to see your builds.
Licence
This work shall remain open source and free.
- Hardware (schematics, PCB layout, gerbers): CERN Open Hardware Licence Version 2 — Strongly Reciprocal (CERN-OHL-S-2.0)
- Documentation (PDF, images, this README): Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Both are share-alike: if you make your own version of this preamp, you are free to build it, sell it and modify it, but you must publish your changes under the same conditions I did.
Contact
Deep Field Audio on Instagram and Facebook.
All you have here is work I spent countless hours on, and that I'm really happy to share with you.
— Nélo Breuiller
Parts
699| Qty | Value | Footprint | References |
|---|---|---|---|
| 83 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R14, R15, R102, R106, R109, R112, R115, R118, R124, R127, R133, R136, R151, R152, R153, R154 +67 |
| 80 | 100nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C21, C22, C221, C222, C223 +64 |
| 43 | Conn_01x01_Pin | Connector_Wire:SolderWire-0.75sqmm_1x01_D1.25mm_OD2.3mm | J1, J2, J15, J16, J17, J18, J19, J20, J21, J22, J23, J24, J25, J26, J27, J28 +27 |
| 24 | 27nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C102, C105, C108, C111, C114, C117, C120, C123, C126, C129, C132, C139, C142, C149, C152, C155 +8 |
| 24 | 47nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C100, C103, C106, C109, C112, C115, C118, C121, C124, C127, C130, C133, C140, C143, C150, C153 +8 |
| 23 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R59, R64, R65, R70, R71, R101, R105, R108, R111, R114, R123, R126, R132, R135, R211, R212 +7 |
| 23 | 56k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21, R29, R68, R69, R74, R100, R103, R107, R110, R113, R116, R121, R125, R128, R134, R137 +7 |
| 21 | 22nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C101, C104, C107, C110, C113, C116, C119, C122, C125, C128, C131, C134, C141, C144, C151, C154 +5 |
| 18 | NE5532 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U3, U4, U11, U13, U14, U17, U18, U19, U20, U21, U22, U23, U38, U40, U42, U44 +2 |
| 14 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C44, C97, C191, C192, C193, C194, C195, C196, C213, C214, C215, C216, C217, C218 |
| 12 | B100k | library perso:potentiometer_Alpha_RV16AF41_Single_Horizontal | RV28, RV29, RV30, RV31, RV32, RV33, RV34, RV35, RV36, RV37, RV38, RV39 |
| 12 | RC4558 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U24, U25, U26, U27, U28, U29, U30, U31, U33, U34, U36, U37 |
| 11 | SW_SPDT | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11 |
| 9 | 5k6 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R122, R130, R138, R149, R150, R181, R182, R183, R210 |
| 9 | B10k | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | RV1, RV2, RV3, RV4, RV14, RV16, RV17, RV18, RV40 |
| 8 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16, R50, R54, R192, R193, R194, R195, R196 |
| 8 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R19, R22, R23, R27, R28, R58, R131 |
| 8 | 10µF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C167, C168, C169, C170, C171, C172, C173, C174 |
| 8 | 2k7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17, R18, R20, R30, R104, R117, R145, R147 |
| 8 | A10k | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | RV6, RV7, RV8, RV9, RV10, RV11, RV12, RV13 |
| 6 | 100nF | Capacitor_THT:C_Rect_L7.2mm_W3.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C35, C36, C69, C70, C86, C87 |
| 6 | 4.7nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C187, C190, C199, C202, C209, C210 |
| 6 | 82k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R139, R140, R141, R142, R163, R164 |
| 6 | NE5532 | Package_DIP:DIP-8_W7.62mm_LongPads | U1, U2, U8, U10, U12, U55 |
| 5 | 22uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C19, C20, C45, C46, C54 |
| 4 | 100uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C52, C53, C88, C89 |
| 4 | 12nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C136, C206, C207, C220 |
| 4 | 160k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R159, R160, R161, R162 |
| 4 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D4, D5, D6, D7 |
| 4 | 2k2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5, R6, R7 |
| 4 | 470R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R26, R35, R36, R209 |
| 4 | A50k | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | RV24, RV25, RV26, RV27 |
| 4 | Conn_01x01_Pin | Connector_Wire:SolderWire-2.5sqmm_1x01_D2.4mm_OD4.4mm | J8, J9, J10, J51 |
| 4 | ~ | Connector_Wire:SolderWire-0.75sqmm_1x01_D1.25mm_OD2.3mm | J11, J12, J13, J14 |
| 3 | 12k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R198, R199, R200 |
| 3 | 820R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R187, R188, R189 |
| 3 | LOGO | library perso:cooperative 15x20 | G***, G***, G*** |
| 3 | LOGO | library perso:DEEP FIELD LOGO (MED) | G***, G***, G*** |
| 2 | 1.8nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C205, C208 |
| 2 | 10R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R61, R83 |
| 2 | 120nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C181, C182 |
| 2 | 150nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C179, C180 |
| 2 | 15k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R55, R57 |
| 2 | 180k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12, R13 |
| 2 | 180nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C177, C178 |
| 2 | 18k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R201, R202 |
| 2 | 1k2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R190, R191 |
| 2 | 1uF | Capacitor_THT:C_Rect_L10.3mm_W7.2mm_P7.50mm_MKS4 | C71, C77 |
| 2 | 2.2nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C211, C212 |
| 2 | 2.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R146, R148 |
| 2 | 220R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R11 |
| 2 | 220nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C175, C176 |
| 2 | 22nF | Capacitor_THT:C_Rect_L7.2mm_W3.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C28, C29 |
| 2 | 33nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C147, C148 |
| 2 | 39k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R85, R119 |
| 2 | 43k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R143, R144 |
| 2 | 4700u | Capacitor_THT:CP_Radial_D18.0mm_P7.50mm | C37, C38 |
| 2 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 2 | 4k7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9 |
| 2 | 5.6nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C183, C186 |
| 2 | 56nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C184, C185 |
| 2 | 750R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R24, R25 |
| 2 | 8k2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R184, R185 |
| 2 | LED | LED_THT:LED_D5.0mm | D2, D3 |
| 1 | 10nF | Capacitor_THT:C_Rect_L10.3mm_W7.2mm_P7.50mm_MKS4 | C80 |
| 1 | 13k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R180 |
| 1 | 1k8 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R129 |
| 1 | 1nF | Capacitor_THT:C_Rect_L11.5mm_W6.9mm_P10.00mm_MKT | C27 |
| 1 | 1uF unpolarized | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C98 |
| 1 | 22nF | Capacitor_THT:C_Rect_L9.0mm_W8.5mm_P7.50mm_MKT | C96 |
| 1 | 22pF | Capacitor_THT:C_Disc_D7.5mm_W5.0mm_P5.00mm | C95 |
| 1 | 270R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R120 |
| 1 | 27k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R197 |
| 1 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R186 |
| 1 | 33pF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C137 |
| 1 | 39nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C145 |
| 1 | 470nF | Capacitor_THT:C_Rect_L11.5mm_W4.3mm_P10.00mm_MKT | C135 |
| 1 | 68nF | Capacitor_THT:C_Rect_L10.3mm_W7.2mm_P7.50mm_MKS4 | C55 |
| 1 | 82nF | Capacitor_THT:C_Rect_L10.3mm_W7.2mm_P7.50mm_MKS4 | C61 |
| 1 | B100k | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | RV19 |
The 591 most common of 699 parts.
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Questions
How big is the Deep field preamp PCB?
It measures 350 × 200 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Deep field preamp use?
699 parts, built around the NE5532, RC4558D and B10K. 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 Deep field preamp KiCad files?
From the DeepFieldAudio/Deep-field-preamp-V1 repository on GitHub, at the commit this page was made from: the board is hardware/deep-field-preamp.kicad_pcb and its schematic hardware/deep-field-preamp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Deep field preamp design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).