Bring your wireless audio to life with SOUNDitBOX, a compact, high-quality Bluetooth A2DP receiver designed for audiophiles and makers alike. Powered by the versatile ESP32-WROOM-32E and paired with the PCM1754 DAC, SOUNDitBOX delivers clean, detailed sound from any Bluetooth-enabled device.

Key Features

Bluetooth A2DP 16-bit/44.1kHz Audio: Compatible with smartphones, tablets, and computers. Stream music wirelessly with low-latency and reliable connection.

32-bit I2S Conversion for PCM1754: Incoming 16-bit Bluetooth audio is internally converted to 32-bit and fed to the PCM1754, maximizing DAC performance and dynamic range.

PCM1754 DAC Output: Enjoy high-quality analog audio suitable for powered speakers, headphone amps, or hi-fi systems.

Low-Power Design with Auto-Off: Keeps power consumption minimal. The system can auto-shutdown after inactivity and supports manual power control via a button (2 sec. hold to shut it down).

Battery or External Power: Latching power design allows stable operation from Li-Ion or regulated supplies.

Single Li-Ion/LiPo battery charger with a maximal charge current of 500mA;

primary-side protection IC for single-cell Li-ion/Li-polymer batteries with OVP, UVP and Overcurrent/Short Circuit;

'Resistor-coded' USB-C 5V input used to charge the battery and/or to power up the board;

Technical Specs

Bluetooth Module: ESP32-WROOM-32E

Audio Codec: PCM1754 DAC, 24-bit native, 32-bit input from ESP32

Sample Rate: 44.1kHz (A2DP), internal processing 32-bit

Dimensions: Compact PCB suitable for embedded audio projects

Why SOUNDit_BOX?

Audiophile-grade output: Optimized for 24-bit DACs like the PCM1754.

Plug-and-play: Works seamlessly with iOS, Android, and Bluetooth-enabled PCs.

Reliable ESP32 Bluetooth stack: Tested on multiple boards for stable streaming.

Special thanks to PCBWay for their excellent PCB manufacturing support, helping bring this project from prototype to a professional, compact board design.