2 layers389 × 136.2 mm
2 layers118.6 × 92.2 mm
Pre amp ecc86
schenkmi/electronic-projects6misc electronic projects
- Size
- 118.6 × 92.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 30
- Pads
- 171
- Tracks, vias
- 162, 20
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Oct 2020
- Updated
- 31 Oct 2026
Overview
Pre amp ecc86 is an open-source printed circuit board by schenkmi, from the schenkmi/electronic-projects repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 118.6 × 92.2 mm with 65 parts on 30 nets, routed with 162 tracks and 20 vias.
It is built around the 1N4148W and MMBT3904. Its parts include 21 resistors, 15 capacitors, 12 connectors, 4 diodes and 1 IC. It belongs with the audio and music boards of this library.
Main components
2README
README.mdelectronic-projects
misc electronic projects
History
2026.09.19
pre-amp-ECC86/kicad/psu-v6
Large PCB PSU for ECC86 with high side switch. Support LT3080 and LM317. Fix Drain/Source.
2026.09.02
pre-amp-ECC86/kicad/psu-v5
Large PCB PSU for ECC86 with high side switch. Support LT3080 and LM317
2026.08.26
pre-amp-ECC86/kicad/psu-v4
Large PCB PSU for ECC86 without relais. Support LT3080 and LM317
2026.08.23
input-sel-attenuator/software/v9
Power up timer to 64ms wait till voltage is stabilized
2026.08.10
pre-amp-ECC86/kicad/psu-v3
Large PCB PSU for ECC86
2026.08.01
pre-amp-ECC86/kicad/psu-v2
Shrinked and optimized PSU for ECC86
2026.07.22
pre-amp-ECC86/kicad/psu-v1
First version of PSU for ECC86
2026.07.12
pre-amp-ECC86/kicad/v1
First version of ECC86 based pre-amplifier
spdif-recv-ak4118-ak4137/software/spdif-recv-ak4118-ak4137-v4.X
Updated software for V4 PCB
2026.06.05
dac-pcm1702-v1/kicad-psu-v8/
DC/DC for +5V digital path
dac-pcm1702-v1/kicad-asrc-v14
PCB LED fix External LED support
spdif-recv-ak4118-ak4137/kicad/v4
External LED support Change one LDO to TLV1117-3.3 due to power dissipation
2026.05.28
dac-pcm1702-v1/kicad-asrc-v13
PCB re-design with fixed LED ordering
2026.05.27
pre-amp-26A7/ltspice/v2/
New CCS simulation with smaller FETs
2026.05.26
dac-pcm1702-v1/software/spdif-recv-asrc-4392-v12.X
New software for SPDIF ASRC receiver including UART and IR
2026.05.16
dac-pcm1702-v1/kicad-asrc-v12
PSU re-design, UART for debugging, I2C debugging, IR
spdif-recv-ak4118-ak4137/kicad/v3
Add IR support
2026.05.10
spdif-recv-cs8416-ak4137/kicad/v7
Improved power supply, I2S debug, Serial console
spdif-recv-ak4118-ak4137/kicad/v2
Small redesign
2026.04.25
spdif-recv-ak4118-ak4137/kicad/v1
Finalize and ordered
pre-amp-26A7/kicad/v2
Finalize and ordered
2026.03.29
pre-amp-26A7/kicad/v1
Finalize and ordered v1
2026.03.28
lv-psu-dcdc/kicad/fixed-v3
Better thermal management for DC/DC
lv-lownoise-psu/kicad/v7-dcdc-large-cap
Better thermal handling on DC/DC
input-sel-attenuator/kicad/v9-10k-47k
Changed footprint for L1 and C1
2026.03.11
lv-psu-dcdc/kicad/fixed-v2
Eval board with different inductors
hv-psu-discrete/kicad/maida-lt3080-v5
HV PSU with DC/DC for +5V output
2026.03.05
lv-lownoise-psu/kicad/v6-dcdc-large-cap
Finalize v6 with large reservoir cap
2026.02.25
hv-psu-discrete/kicad/maida-lt3080-v5-26A7GT
HV PSU for 26A7 pre-amp
2026.01.13
input-sel-attenuator/software/ir-debug-v3
Update MCC generated code
dac-pcm1792a/software/asrc-pcm1792a-v4.X
Update MCC generated code
dac-pcm1702-v1/software/v8
Update MCC generated code
spdif-recv-cs8416-ak4137/software/spdif-recv-cs8416-ak4137-v5.X
Update MCC generated code
input-sel-attenuator/software/v9
Update MCC generated code
rpi-hat-spdif/kicad/V9
RPI HAT SPDIF Output increase hole diameter to 3.2mm
rpi-hat-spdif/kicad/V9-min
RPI HAT SPDIF Output minized PCB increase hole diameter to 3.2mm
2026.01.01
adapter/spdif/kicad/v2
LVDS SPDIF XMIT with rotated connector
adapter/spdif/kicad/v2b
LVDS SPDIF XMIT with standard connector
rpi-hat-spdif/kicad/V7-min
RPI HAT SPDIF Output minized PCB
rpi-hat-spdif/kicad/V8
RPI HAT SPDIF Output new PCB
2025.12.20
adapter/spdif/kicad/v1
Finalize v1 LVDS SPDIF XMIT
rpi-hat-spdif/kicad/v6
RPI HAT SPDIF Output
rpi-hat-spdif/kicad/v6-min
RPI HAT SPDIF Output minimized
2025.12.08
pre-amp-ECC88/kicad/v9
Finalize and ordered v9
2025.09.29
retro/c64-user-port-led
Finalize v1 of C64 user port LED
2025.09.28
dac-pcm1704/kicad/dac-df1706-pcm1704-v2
Finalize and ordered v2
2025.09.21
dac-pcm1704/kicad/dac-pcm1704-v5
Finalize and ordered v5
dac-pcm1702-v1/kicad-i2s-nos-v7
Finalize and ordered v7
dac-pcm1792a/kicad/v6/
Finalize and ordered v6
2025.09.13
input-sel-attenuator/software/ir-debug-v2
input-sel-attenuator/software/v8
V2.5 2025.09.12 Shiny new push button and saving handling Use volume when doing channel switch.
2025.09.07
lv-lownoise-psu/kicad/v5-dcdc
Finalize and ordered v5
lv-lownoise-psu/kicad/v5-dcdc-large-cap
Finalize and ordered v5 with large reservoir cap
2025.08.25
lt1115-phono-mm-mc/kicad/v6
Finalize and ordered v6
2025.08.23
dac-pcm1702-v1/kicad-psu-v7
Finalize and ordered v7
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | Conn_01x01 | Connector_Pin:Pin_D1.0mm_L10.0mm | J1, J2, J3, J4, J7, J8, J11, J12 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4, R7, R11, R13, R16 |
| 4 | 100R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R22, R26, R27 |
| 4 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C6, C9, C11 |
| 4 | 1Meg | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R9, R10, R18 |
| 4 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2, D3, D4 |
| 4 | 3.3uF | Capacitor_THT:C_Rect_L7.2mm_W7.2mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C4, C5, C8 |
| 4 | Conn_01x01 | Connector_Pin:Pin_D1.3mm_L11.0mm | J5, J6, J9, J10 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1, JP2, JP3 |
| 2 | 1.2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R12 |
| 2 | 100nF/50V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14, C15 |
| 2 | 2.49k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R23 |
| 2 | 2200uF | Capacitor_THT:CP_Radial_D16.0mm_P7.50mm | C10, C12 |
| 2 | 470uF | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C3, C7 |
| 2 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R15 |
| 2 | ECC86 | kicad-snk:TubeNoval-ECC86 | T1, T2 |
| 1 | 15uF/25V | Capacitor_Tantalum_SMD:CP_EIA-3216-12_Kemet-S_HandSolder | C13 |
| 1 | 2Meg | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19 |
| 1 | G6K-2F-TR DC6 | Relay_SMD:Relay_DPDT_Omron_G6K-2F | K1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | TLC555xD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
Questions
How big is the Pre amp ecc86 PCB?
It measures 118.6 × 92.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pre amp ecc86 use?
65 parts, built around the 1N4148W and MMBT3904. 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 Pre amp ecc86 KiCad files?
From the schenkmi/electronic-projects repository on GitHub, at the commit this page was made from: the board is pre-amp-ECC86/kicad/v1/pre-amp-ecc86.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pre amp ecc86 design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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