Quad Preamp and 4-Channel Ambisonic Recorder
About the Quad Preamp and 4-Channel Ambisonic Recorder PCB
Quad Preamp and 4-Channel Ambisonic Recorder is an open source NXP PCB design by jdg511, published on GitHub. It is a 2-layer board measuring 138 × 114 mm, with 180 components from 74 distinct parts.
Its main chip is the TEENSY41, from the NXP family. Other key parts include the TPS62160DGKR, TPS7A2033PDBVR, TLE2426IDR, CD4053BPWR and OPA1654AIPWR. By type, the board carries 74 resistors, 73 capacitors, 10 ICs, 9 diodes, 7 connectors and 4 switches.
It belongs with the audio and power & battery designs in this gallery.
From the project
Quad Preamp and Recorder project
Compact four-channel ambisonic electret preamp, 192 kHz/24-bit recorder, real-time binaural monitor, and touchscreen controller.
The hardware is derived from jdg511/Quadelectretpre and is redesigned as a mixed-signal two-layer PCB in a Hammond 1590XX enclosure.
- hardware/ — KiCad project, fabrication package, design notes, and reviews. - tools/ — reproducible schematic, PCB, and fabrication-generation scripts. - firmware/ — recorder/DSP interface, pin map, file-naming rules, and implementation requirements. Production firmware is not included in Rev A.
Main components on the Quad Preamp and 4-Channel Ambisonic Recorder
Quad Preamp and 4-Channel Ambisonic Recorder bill of materials (BOM)
180 components, 74 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS62160DGKR TPS62160DGK Texas Instruments | VSSOP-8_3x3mm_P0.65mm | U1 |
| 1 | TPS7A2033PDBVR TPS7A2033PDBV Texas Instruments | SOT-23-5 | U2 |
| 1 | TLE2426IDR TLE2426ID Texas Instruments | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 2 | CD4053BPWR CD4053BPW Texas Instruments | TSSOP-16_4.4x5mm_P0.65mm | U4, U5 |
| 1 | OPA1654AIPWR OPA1654 Texas Instruments | TSSOP-14_4.4x5mm_P0.65mm | U6 |
| 1 | PCM1864DBTR PCM1864DBT Texas Instruments | TSSOP-30_4.4x7.8mm_P0.5mm | U7 |
| 1 | TEENSY41 Teensy 4.1 PJRC | Teensy41_Socket | U8 |
| 1 | PCM5102APWR PCM5102A Texas Instruments | TSSOP-20_4.4x6.5mm_P0.65mm | U9 |
| 1 | TPA6132A2RTER TPA6132A2 Texas Instruments | WQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U10 |
| 1 | PJ-102AH 9V DC IN CUI Devices | BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | RJHSE-5380 AMBISONIC MIC RJ45 Amphenol ICC | RJ45_Amphenol_RJHSE5380 | J2 |
| 1 | PRPC014SAAN-RC MSP3520 TFT 3.5IN 14PIN HEADER Sullins Connector Solutions | PinHeader_1x14_P2.54mm_Vertical | J3 |
| 1 | NRJ6HF 1/4in BINAURAL LINE OUT Neutrik | Jack_6.35mm_Neutrik_NRJ6HF_Horizontal | J4 |
| 1 | SJ1-3533NG 1/8in BINAURAL HEADPHONE OUT CUI Devices | Jack_3.5mm_CUI_SJ1-3533NG_Horizontal | J5 |
| 1 | 2x13 0.1in pin header ANALOG TEST HEADER 2x13 Generic | PinHeader_2x13_P2.54mm_Vertical | J6 |
| 1 | 2x13 0.1in pin header DIGITAL TEST HEADER 2x13 Generic | PinHeader_2x13_P2.54mm_Vertical | J7 |
| 1 | 1206L075/13.2WR 750mA PTC Littelfuse | Fuse_1206_3216Metric | F1 |
| 1 | RK0971221-F15-C0-A103 10kA HEADPHONE VOLUME Alps Alpine | RK097_Dual_Horizontal_NoEdgeGuide | RV1 |
| 1 | 100SP1T1B1M7REH PAD -10dB E-Switch | SW_Toggle_ESwitch_100SP_M7 | SW1 |
| 1 | B3F-5150 RECORD START/STOP Omron | SW_PUSH-12mm | SW2 |
Show 54 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | EC11E15244G1 MASTER GAIN Alps Alpine | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW3 |
| 1 | SKQUCAA010 TFT MENU NAV Alps Alpine | SW_Nav_ALPS_SKQUCAA010 | SW4 |
| 2 | SS14-13-F SS14 Diodes Incorporated | D_SMA | D1, D3 |
| 1 | SMBJ12A Littelfuse | D_SMB | D2 |
| 1 | LTST-C190TBKT POWER BLUE Lite-On | LED_0603_1608Metric | D4 |
| 1 | LTST-C190KRKT RECORD RED Lite-On | LED_0603_1608Metric | D5 |
| 4 | PESD12VL1BA,115 PESD12VL1BA Nexperia | D_SOD-323 | D6, D7, D8, D9 |
| 1 | ASPIAIG-F4020-2R2M-T 2.2uH 1.5A Abracon | L_Abracon_ASPIAIG-F4020 | L1 |
| 1 | EEE-FK series low-ESR aluminium electrolytic 100uF 25V Panasonic | CP_Elec_6.3x5.8 | C1 |
| 1 | GRM series X7R/C0G 100nF 25V Murata | C_0805_2012Metric | C2 |
| 1 | GRM series X7R/C0G 10uF 25V Murata | C_1206_3216Metric | C3 |
| 5 | GRM series X7R/C0G 22pF C0G Murata | C_0603_1608Metric | C4, C21, C22, C23, C24 |
| 2 | GRM series X7R/C0G 22uF 10V Murata | C_1206_3216Metric | C5, C6 |
| 2 | GRM series X7R/C0G 1uF 10V Murata | C_0805_2012Metric | C7, C9 |
| 1 | GRM series X7R/C0G 4.7uF 10V Murata | C_0805_2012Metric | C8 |
| 1 | GRM series X7R/C0G 47uF 10V Murata | C_1206_3216Metric | C10 |
| 20 | GRM series X7R/C0G 100nF Murata | C_0603_1608Metric | C11, C33, C34, C35, C36, C40, C41, C43 +12 |
| 1 | GRM series X7R/C0G 1nF 1kV C0G Murata | C_0805_2012Metric | C12 |
| 4 | GRM series X7R/C0G 100pF C0G Murata | C_0603_1608Metric | C13, C14, C15, C16 |
| 8 | GRM series X7R/C0G 4.7uF 16V Murata | C_1206_3216Metric | C17, C18, C19, C20, C25, C26, C27, C28 |
| 4 | GRM series X7R/C0G 10nF C0G Murata | C_0603_1608Metric | C29, C30, C31, C32 |
| 1 | GRM series X7R/C0G 10uF 16V Murata | C_1206_3216Metric | C37 |
| 3 | GRM series X7R/C0G 1uF Murata | C_0805_2012Metric | C38, C39, C53 |
| 5 | GRM series X7R/C0G 10uF Murata | C_1206_3216Metric | C42, C45, C46, C55, C62 |
| 2 | GRM series X7R/C0G 10nF Murata | C_0603_1608Metric | C48, C49 |
| 2 | GRM series X7R/C0G 2.2uF Murata | C_0805_2012Metric | C51, C52 |
| 1 | GRM series X7R/C0G 680nF X7R Murata | C_0805_2012Metric | C57 |
| 1 | GRM series X7R/C0G 680nF X7R Murata | C_0603_1608Metric | C58 |
| 1 | GRM series X7R/C0G 1uF Murata | C_0603_1608Metric | C59 |
| 3 | GRM series X7R/C0G 2.2uF Murata | C_0603_1608Metric | C60, C61, C65 |
| 1 | EEE-FK series low-ESR aluminium electrolytic 100uF 16V Panasonic | CP_Elec_6.3x5.8 | C66 |
| 2 | GRM series X7R/C0G 2.2nF C0G Murata | C_0603_1608Metric | C67, C68 |
| 1 | RC0603FR series, 1% 680k Yageo | R_0603_1608Metric | R1 |
| 1 | RC0603FR series, 1% 130k Yageo | R_0603_1608Metric | R2 |
| 7 | RC0603FR series, 1% 100k Yageo | R_0603_1608Metric | R3, R38, R39, R40, R41, R42, R64 |
| 5 | RC0603FR series, 1% 1M Yageo | R_0603_1608Metric | R4, R14, R15, R16, R17 |
| 1 | RC0603FR series, 1% 0R CHASSIS LINK Yageo | R_0603_1608Metric | R5 |
| 4 | RC0603FR series, 1% 4.7k ELECTRET BIAS Yageo | R_0603_1608Metric | R6, R7, R8, R9 |
| 4 | RC0603FR series, 1% 100R RF Yageo | R_0603_1608Metric | R10, R11, R12, R13 |
| 4 | TNPW0603 series, 0.1% 68k 0.1% Vishay | R_0603_1608Metric | R18, R20, R22, R24 |
| 4 | TNPW0603 series, 0.1% 33k 0.1% Vishay | R_0603_1608Metric | R19, R21, R23, R25 |
| 4 | TNPW0603 series, 0.1% 10k 0.1% Vishay | R_0603_1608Metric | R26, R27, R28, R29 |
| 4 | TNPW0603 series, 0.1% 90.9k 0.1% Vishay | R_0603_1608Metric | R30, R31, R32, R33 |
| 5 | RC0603FR series, 1% 100R Yageo | R_0603_1608Metric | R34, R35, R36, R37, R61 |
| 1 | RC0603FR series, 1% 47k Yageo | R_0603_1608Metric | R43 |
| 2 | RC0603FR series, 1% 4.7k Yageo | R_0603_1608Metric | R44, R45 |
| 8 | RC0603FR series, 1% 33R Yageo | R_0603_1608Metric | R46, R47, R48, R49, R57, R58, R59, R69 |
| 10 | RC0603FR series, 1% 10k Yageo | R_0603_1608Metric | R50, R51, R52, R53, R60, R70, R71, R72 +2 |
| 1 | RC0603FR series, 1% 2.2k Yageo | R_0603_1608Metric | R54 |
| 2 | RC0603FR series, 1% 1k Yageo | R_0603_1608Metric | R55, R68 |
| 1 | RC0805FR-07100RL 100R TFT BACKLIGHT Yageo | R_0805_2012Metric | R56 |
| 2 | RC0603FR series, 1% 470R Yageo | R_0603_1608Metric | R62, R63 |
| 2 | RC0603FR series, 1% 10R Yageo | R_0603_1608Metric | R65, R66 |
| 1 | RC0603FR series, 1% 100R MIC BIAS FILTER Yageo | R_0603_1608Metric | R67 |
Quad Preamp and 4-Channel Ambisonic Recorder design files
The KiCad project lives in the jdg511/quadpreandrecorder repository on GitHub; these links point at the commit this page was built from.
Quad Preamp and 4-Channel Ambisonic Recorder: common questions
What microcontroller does the Quad Preamp and 4-Channel Ambisonic Recorder use?
The Quad Preamp and 4-Channel Ambisonic Recorder is built around the TEENSY41, from the NXP family.
How big is the Quad Preamp and 4-Channel Ambisonic Recorder PCB?
The Quad Preamp and 4-Channel Ambisonic Recorder measures 138 × 114 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Quad Preamp and 4-Channel Ambisonic Recorder?
180 components, from 74 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 Quad Preamp and 4-Channel Ambisonic Recorder design files?
From the jdg511/quadpreandrecorder repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Quad Preamp and 4-Channel Ambisonic Recorder design in my own project?
The repository has no license, so all rights stay with jdg511. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Quad Preamp and 4-Channel Ambisonic Recorder without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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