Louder-ESP32-S3 Stereo Audio Development Board TAS5805M

The Louder-ESP32 from Sonocotta is a complete stereo audio development board that combines an ESP32-WROVER-N8R8 microcontroller with the Texas Instruments TAS5805M I2S-DAC and integrated class D amplifier. It is suitable for direct connection of passive speakers and delivers up to 2×23 W into 8-ohm loads or 2×32 W into 4-ohm loads. The firmware is fully open source: Squeezelite-ESP32 (Spotify Connect, AirPlay, LMS), Snapclient for multiroom audio, and ESPHome for Home Assistant integration can be flashed directly via the browser.

Recommended accessories:

• Speaker 4 Ohm 3 W 40 mm
• 5 W 4 Ohm Speaker in Plastic Housing
• 12 V DC 4000 mA Power Supply AC/DC Adapter 5.5 mm/2.1 mm Plug

Features:

• Texas Instruments TAS5805M I2S-DAC with integrated class D amplifier delivers up to 2×23 W (8 Ω) or 2×32 W (4 Ω) for direct operation of passive speakers without external power amplifier
• Onboard DSP of the TAS5805M with parametric EQ, soft clipping, DRC, and AGL enables extensive sound processing directly on the board without an external processor
• ESP32-WROVER-N8R8 with 8 MB PSRAM (4 MB usable) provides sufficient buffer memory for stable audio streaming even with high-bitrate content
• Mechanically compatible with Raspberry Pi 4 cases for easy integration into commercially available standard cases and 3D-printable community designs
• Complete open-source firmware support: Squeezelite-ESP32, Snapclient, ESPHome - all directly flashable via the browser without development environment
• Optional W5500 Ethernet header and I2S microphone header for extended connectivity in Wi-Fi dense environments and voice control applications

Application examples:

• Multiroom audio system with Snapclient for perfectly synchronized playback in multiple rooms without proprietary platform
• Home Assistant speaker with ESPHome integration for voice announcements, TTS notifications, and music playback via Music Assistant
• Standalone network player with Squeezelite-ESP32 for Spotify Connect, AirPlay, and Logitech Media Server without external computer
• Speaker kit for DIY projects - the board fits into Raspberry Pi 4 cases and can be directly connected with suitable passive speakers
• Prototyping of audio-capable IoT devices with DSP sound adjustment, Wi-Fi streaming, and optional Ethernet connection

Documentation:

• GitHub – Sonocotta ESP32 Audio Dock
• Sonocotta – Louder ESP32 Product Page

Technical Specifications:

• Manufacturer SKU: CQA23809 ESP32-Built-in
• MCU: ESP32-WROVER-N8R8 (Dual-Core, 240 MHz)
• Flash: 8 MB
• PSRAM: 8 MB (4 MB usable)
• Wi-Fi: 2.4 GHz IEEE 802.11 b/g/n, Bluetooth 4.2 + BLE
• DAC / Amplifier IC: Texas Instruments TAS5805M (I2S, Class D)
• Output Power: 2×23 W (8 Ω, 1 % THD+N) / 2×32 W (4 Ω, 1 % THD+N) / 1×45 W (Bridge, 4 Ω)
• DSP: Onboard TAS5805M DSP (parametric EQ, soft clipping, DRC, AGL)
• Speaker Output: 2× Stereo Terminal Block (passive, no headphones)
• Power Supply: 5–28 V DC (barrel connector), USB-C for 5 V operation
• Ethernet: W5500 SPI Header (module optional)
• I2S Microphone: Header (stereo, unpopulated)
• Case Compatibility: Raspberry Pi 4
• Supported Firmware: Squeezelite-ESP32, Snapclient, ESPHome, Arduino IDE, PlatformIO
• Package Dimensions: 126 × 88 × 14 mm
• Gross Weight: 38 g

Scope of delivery:

• 1× Louder-ESP32-S3 Stereo Audio Development Board TAS5805M