Louder ESP32
ESP32 audio development board with TAS5805M I2S Class-D amplifier delivering 2x23W stereo output, designed for multi-room audio, network streaming, and smart home integration.
$24.00
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Specifications
Components
Espressif ESP32-WROVER module with Xtensa LX6 dual-core processor at 240MHz, 8MB flash, 8MB PSRAM, WiFi 802.11 b/g/n, Bluetooth 4.2, and hardware crypto acceleration.
Texas Instruments closed-loop Class-D stereo amplifier with integrated I2S DAC and DSP. Delivers 2x23W at 8 ohms (1% THD+N) or 45W bridged mono at 4 ohms. Features 15-band parametric EQ, 128-tap FIR filter, 3-band DRC, automatic gain limiter, and 107dB SNR.
WS2812B addressable RGB LED for status indication, controllable via single-wire protocol from ESP32 GPIO.
Bus Interfaces
GPIO Map
Overview
The Louder ESP32 by Sonocotta is an ESP32-powered audio development board that pairs a dual-core ESP32-WROVER module with a TAS5805M I2S DAC and Class-D amplifier. It delivers 2x23W stereo output at 8 ohms or 45W bridged mono at 4 ohms, making it capable of driving full-size passive speakers for living room or whole-home audio setups. The TAS5805M's integrated DSP provides 15-band parametric EQ, 128-tap FIR filtering, 3-band dynamic range compression, and automatic gain limiting — all configurable over I2C.
Designed in a Raspberry Pi 4-compatible form factor, the Louder ESP32 fits standard Pi enclosures and supports optional add-ons including a 128x64 OLED display, W5500 Ethernet module for wired networking, and an INMP441 MEMS microphone for voice capture. The board accepts a wide power input range of 4.5V to 26V, allowing it to be powered from anything from a USB-C charger to a dedicated audio PSU.
The board ships with multiple firmware options out of the box: Squeezelite-ESP32 for Logitech Media Server, Spotify Connect, and AirPlay streaming; Snapclient for synchronized multi-room audio; and ESPHome for Home Assistant integration with text-to-speech announcements and media playback. Both hardware schematics and firmware are fully open-sourced under Apache 2.0 on GitHub, with browser-based web installers available for one-click firmware flashing.
Available in four variants — ESP32 or ESP32-S3, each with built-in PCB antenna or external U.FL/IPEX antenna connector — the Louder ESP32 serves as a versatile platform for network audio players, voice notification systems, DSP experimentation, and custom audio device prototyping.
Use Cases
6Multi-Room Audio
Synchronized audio playback across multiple rooms using network streaming protocols like Snapcast, AirPlay, or Spotify Connect.
Network Audio Player
Dedicated network music player streaming audio from local servers, Spotify, AirPlay, or internet radio over WiFi or Ethernet.
Hi-Fi Audio
High-fidelity audio playback and amplification for music listening, streaming, and audiophile applications.
home-automation
DSP Audio Processing
Real-time digital signal processing for audio including parametric EQ, crossover filtering, dynamic range compression, and room correction.
Voice Assistant
Offline and cloud-connected voice assistant, wake-word detection, and speech recognition projects.
Resources
Where to Buy
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