@meanman1964 , as per the web site,it is an open source version of the Quad405 “The Q17 is an error correction HIFI amplifier based on the QUAD405 current dumping principl”.
Best!
Do
https://github.com/stefaweb/Q17-Amplifier
Best!
Do
https://github.com/stefaweb/Q17-Amplifier
For anyone interested in buying the Q17 amplifier modules, I can assemble and test them before shipping for 50$ extra.