Polyphony Options for TASCAM 4x4HR USB audio card on linux This utility uses libusb-1.0 to setup the TASCAM 4x4HR options via USB control trasfers. You may need following packages installed: libusb-1.0-0, libusb-1.0-0-dev Example: #set ports to mono: ./potascam --stereo-mode12 0 ./potascam --stereo-mode34 0 #disable loopback mode ./potascam --disable-loopback #enable inputs: ./potascam --enable-input 1 ./potascam --enable-input 2 ./potascam --enable-input 3 ./potascam --enable-input 4 #set outputs to computer output ./potascam --lineout12 ./potascam --lineout34