Creative Sound Blaster X4 Hi-Res 24bit/192kHz External USB DAC and Amp Sound Card, Super X-Fi, Multi-Channel, 7.1 Discrete Surround, Optical-in, Optical-out, Line-in, Mic-in, Headset-in for PC and Mac : Amazon.co.uk: Computers &
This pro. quality multichannel sound card for the Pi - DACs - Volumio Community
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Digigram VX881E Multi-channel PCM Sound Card with 4x Stereo AES/EBU I/O with SRC / Word Clock and LTC