HiFiBerry DAC+ DSP

The HiFiBerry DAC+ DSP is a powerful audio board for the Raspberry Pi that combines high-resolution 24-bit/192kHz playback with advanced digital signal processing. It is perfect for high-end audio, media streaming, and custom DSP applications.

The board features a 300MHz DSP supporting thousands of filters, an integrated asynchronous sample-rate converter, and both analog and digital inputs and outputs. TOSLink provides digital input up to 96kHz and output up to 192kHz, while the analog stereo RCA outputs deliver clean playback with a 112dB SNR and 2.1Vrms output level.

The DSP can be programmed with SigmaStudio, and the onboard EEPROM allows the DAC+ DSP to run stand-alone without a Raspberry Pi. Its compact HAT form factor ensures easy and reliable mounting on the 40-pin GPIO header.

Features

• 24-bit/192kHz DAC for high-quality playback
• 300MHz DSP with advanced filter support
• TOSLink digital audio input (up to 96kHz) and output (up to 192kHz)
• Asynchronous sample-rate converter for optimal signal quality
• Direct connection to Raspberry Pi 40-pin GPIO header

Specifications

• DAC resolution: 24-bit, up to 192kHz
• DSP: 300MHz, 6144 instructions/sample, FFT and FIR accelerators
• Analog outputs: stereo RCA, max. 2.1Vrms
• Digital I/O: TOSLink input up to 96kHz, output up to 192kHz
• Signal-to-noise ratio: 112dB typical
• THD+N: –93dB typical
• DSP capacity: >1000 IIR filters, ~8000 FIR taps
• DSP arithmetic: 32-bit decimal
• EEPROM for stand-alone operation without Raspberry Pi
• Power consumption: <3W depending on DSP program
• Dimensions: approx. 65 x 56 mm