Audio play command “afplay” on macOS does not work for UR816C. The same command works for builtin loudspeaker and other audio interfaces such as PreSonus STUDIO 2|6 USB.
Thanx in advance
Hardware
MacBookPro15,2
Software
macOS 10.15.2 (19C57)
Driver
Yamaha Steinberg USB Driver V2.0.2
Example terminal command and output
kawahara@MacBook-Pro-4 rtImpFVN % afplay -d test440.wav
Playing file: test440.wav
Playing format: AudioStreamBasicDescription: 1 ch, 44100 Hz, ‘lpcm’ (0x0000000C) 16-bit little-endian signed integer
Buffer Byte Size: 44100, Num Packets to Read: 22050