8 layers134 × 114 mm

Jlcpcb 1x1
t-dsp/t-dsp_core
T-DSP Core 4-layer audio backplane — Teensy 4.1, ESP32, and T-DSP TAC5212 codec module
172 parts6
Boards in 2 GitHub repositories, designed in KiCad, that use the PJRAS2X1S01X by Switchcraft (- RCA Connector ROHS). See how each wires it, with its parts, size, README and files; the PJRAS2X1S01X’s symbol, footprint and pinout are on its own page.

t-dsp/t-dsp_core
T-DSP Core 4-layer audio backplane — Teensy 4.1, ESP32, and T-DSP TAC5212 codec module

arthurbenemann/OPA_PHONO
Phono amplifier for MM cartridges, base on TI's OPA lineup