You will find the latest user docs here:

Latest additions:
  • Details about the current Pi-DAC+ and it's new I/O Headers (IR sensor and Rotary Encoder - physical volume control pin-outs)
  • Some preliminary details on the new Pi-DigiAMP+ board for the Raspberry Pi.

If there are areas of this document which need to be updated please let me know by PM or email.

Best regards,