freeDSP-CLASSIC-SMD-A with balanced input and outputs and freeUSBi onboard
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SMD Version with 1 I2S expansion header and balanced inputs/outputs and freeUSBi onboard.

Upgrades from CLASSIC SMD A

  • balanced audio inputs and outputs
  • supports balanced interconnections with +6dBu (ARD nominal signal level)
  • supports unbalanced interconnections with -10dBV (consumer audio nominal signal level)
  • OpAmps supplied with +5V
  • DC power input on barrel jack
  • 1 standard I2S expansion header

For more information, please refer to the website and the documentation.




This work and all other materials under are licensed under a Creative Commons Attribution Share-Alike 4.0 license. This allows for both personal and commercial derivative works, as long as they credit freeDSP and release their designs under the same license.