[Sergy]

Hello Frank

This controller has:
1) voltage stabilizer
2) "in-out" level (analogue, audio) adaptor for correct connection between head unit and amplifier
3) digital controller for the amplifier

Need it connect to CAN or not - I dont know, sorry.
May be some of our smart guys can help.

WBR
Sergy

PS: some GPS systems (SkyNavy G9) has this functionality in-the-body and dont need an external adapters like DSA-01.