DSPi firmware turns Raspberry Pi RP2040/RP2350 into a USB sound card with onboard DSP

Weeb Labs' DSPi firmware turns Raspberry Pi Pico, Pico 2 and other RP2040/RP2350 boards into a USB sound card with an integrated DSP, offering room correction, active crossovers, parametric EQ and time alignment. It supports 16/24-bit PCM at 44.1, 48 and 96 kHz, S/PDIF input and up to four stereo outputs (eight channels on RP2350).

• Cores on RP2040/RP2350 are overclocked to 307.2 MHz, with EQ split across both cores
• Up to 10 PEQ bands per channel: 70 filters on RP2040 and 110 on RP2350
• Linkwitz-Riley, Butterworth and Bessel crossovers up to 8th order (48 dB/oct)
• Controlled via the DSPi Console GUI and terminal on macOS, Windows and Linux