Announcing: USB to I2S Converter Lullaby 384
- PCM Rate - Up to 384kHz / 32bit
- DSD Rate - Up to DSD256
- Mode - Selectable Master or Slave
- Base DSP - STM32H7B0VBT6
- Power source - USB 5V, external stabilized 5V, external raw DC 7-12V
- Inputs - High-Speed USB Type-B 480Mb/s
- Outputs - Amanero-compatible 20-pin connector, I2S and S/PDIF outputs
- Features - Ultra-low-noise power supplies, I2S galvanic isolation, OLED I2C, no-FPGA design, D-type flip-flops I2S lines re-clock
- Board size - 71.5×40 mm
USB to I2S converter "Lullaby 384"
Expected Technical Details:
- Audio Formats: Supports PCM up to 384 kHz / 32-bit and DSD up to DSD256.
- Clocking & Jitter Reduction: Can run in Master mode using on-board oscillators, or in Slave mode with an external MCLK input. It also includes an on-board re-clocking block based on 74AUP79 D-type flip-flops to minimize jitter.
- Isolation: Full galvanic isolation on both the I2S audio lines and the AUX lines.
- Power Design: Features four ultra-low noise power rails that separate the supplies for the USB receiver, STM32 DSP, oscillators, and the re-clocking circuitry.
- Power Options: Flexible powering via USB 5V, a stabilized external 5V supply, or a raw DC input (7–12V) using the on-board LM1117-5.0 linear regulator.
- Display: Supports a standard 4-pin I2C OLED (SSD1306) with a 128x64 resolution.
Announcing Lullaby-384, an open-source USB-to-I2S converter based on the STM32H7 MCU family (STM32H7B0VBT6). A No-FPGA design, utilizing ultra-fast 74AUP79 D-type flip-flops to re-clock the I2S lines.
The board is designed to be fully Amanero-compatible, matching its mechanical footprint and electrical pinout exactly.
Lullaby 384 3D-model
Published on 08 June, 2026