2 layers54.6 × 89.5 mm

Boards in 2 GitHub repositories, designed in KiCad, that use the TPA2012D2RTJT by Texas Instruments (-40℃~+85℃ -55dB 0.11% 2 Pairs Differential Inputs 2-Channel 2.1Wx2@4Ω 2.5V~5.5V 9mA Class D Enable/shutdown function、Filterless architecture、ESD protection、Digitally programmable gain QFN-20-EP(4x4) Audio Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the TPA2012D2RTJT’s symbol, footprint and pinout are on its own page.