I purchased to pi4 along with the Allo Digione and used a USB to serial cable. I tried it with dietpi, Meridian extension, and bridge extensions enabled. I was able to get a digital output but no volume control via airplay. I must admit rasbarian use is foreign to me and I struggle greatly with it. In the end, I just installed rooExtend to use the Nuimo volume control on one of my systems. If in fact a unit can be configured to connect to M kit and switch input for airplay and control volume via IOS, I would be more than willing to pay to have one configured.

Last edited by Carlton9000; 2021-12-19 23:21.

M2.0>ROON: C15/DSP6K
C2.2>ROON: ALLO DIGIONE/DSP5K+D2500x2
W2.2>ROON: C10/DSP33+D2500
R2.0>ROON R: MiniDSP SHD>SCHIIT Freya+(Forkbeard)>3eAudio A7 Mono>>>Apogee Scintilla

Projects. ROON streamer with serial RS232 volume control