TinyPICO I2S Audio, I2S Microphone & 3.7W Stereo Amplifier Module with Built-in MicroSD card reader
2020: Proto-driver and example applications for Teensy MCUs using the Wolfson WM8960 USB Audio DAC with headphone stereo power amplifier.
A budget focussed DIY valve/tube headphone amplifier that is so simple it can be easily wired without a PCB. This repository contains circuit schematics/diagrams for a variety of compatible valves/tubes.
S/PDIF DAC Headphone Amp for Raspberry Pi Pico
A current drive headphone amplifier
Portable effects for USB and analog audio
Headphone Amplifier breakout board using TPA6132A2RTER
Symmetric In-Ear XLR Headphone Amplifier
A benchtop headphone amplifier for testing microphone and line level signals.
Reviving an old headphone amplifier design of mine built in the mid 2000's.
云姬电脑版（非官方 Windows 移植）：让云姬小尾巴/解码耳放在电脑上调音。8 段参数均衡器 ProEQ、简易均衡器 EZEQ、DAC 音量、麦克风增益、声道平衡、滤波器切换，TTGK 免驱即插即用，MIT 开源。
A standalone desktop tool for pushing and editing parametric EQ profiles on Walkplay-based USB DAC dongles (e.g. Crinear Protocol Micro)
Unofficial Windows app for the Moondrop DAWN PRO 2 USB DAC/AMP: parametric EQ editor, AutoEq headphone curves, profiles applied when the DAC is plugged in, and a tray icon. No browser, no driver.
Simple 12V 0.5A headphone amplifier convergent with the CMoy's design and philosophy.
Traced schematic of the headphone amp Topping L50. Along with the Altium project
CSR64215 + PCM5102 + PreAMP(Dual OPA227)
Headpone amplifier with TPA6120A2
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