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Diyaudio dac preamp

JosVanEijndhoven·diyaudio-dac-preamp·dacxo-hw/PCBs/PCB-trafoout/output-xform.kicad_pcb

Diyaudio dac preamp PCB layout, top view — open source board by JosVanEijndhoven

About the Diyaudio dac preamp PCB

Diyaudio dac preamp is an open source PCB design by JosVanEijndhoven, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 100 × 120 mm, with 43 components from 18 distinct parts.

By type, the board carries 17 resistors, 7 relays, 5 diodes, 5 capacitors, 4 transistors and 2 connectors.

It belongs with the iot & wireless designs in this gallery.

From the project

DAC design featuring low jitter, with esphome UI, HDMI-arc, and DLNA player

This github repository provides all HW and SW sources of my DIY audio DAC design. The audio 'Digital-to-Analog Conversion' is the heart and main aim of the design. However, more audio device functionality was built around that:

- Functionality for a digital pre-amp is provided, with input selection and volume control. Inputs are optical and coax s/pdif, HDMI-arc, and a network DLNA audio player. - The control UI (user interface) is created with esphome. Besides the front panel control knob, this also provides remote control from a mobile phone and/or integration in home assistant automation…

Diyaudio dac preamp, from the project README
From the project README

Diyaudio dac preamp bill of materials (BOM)

43 components, 18 distinct parts.

QtyPartRefs
4
2N2905A
Q1, Q2, Q3, Q4
2
CONN_01X08
P2, P3
1
P***
1PIN
1
CONN_01X05
K1
1
RELAY_G6K_AB
K2
2
CONN_3
K3, K6
2
XLR3-MALE
K4, K7
1
cinch-dual
K5
2
LL2811
T1, T2
4
DIODE
D1, D2, D3, D4
1
LED
D5
5
4.7mF
C1, C2, C3, C4, C5
4
33
R1, R2, R3, R4
2
470
R5, R11
6
1k
R6, R8, R10, R12, R14, R16
2
5.6k
R7, R13
2
75
R9, R15
1
5k6
R17

Diyaudio dac preamp design files

The KiCad project lives in the JosVanEijndhoven/diyaudio-dac-preamp repository on GitHub; these links point at the commit this page was built from.

Diyaudio dac preamp: common questions

How big is the Diyaudio dac preamp PCB?

The Diyaudio dac preamp measures 100 × 120 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Diyaudio dac preamp?

43 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Diyaudio dac preamp design files?

From the JosVanEijndhoven/diyaudio-dac-preamp repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Diyaudio dac preamp design in my own project?

Yes, under the terms of its GPL-3.0 license, which JosVanEijndhoven chose for the repository.

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