BeCOS – When fully loaded, COS Engineering's D10 is a 5-in-1 streamer, phono stage, DAC, headphone amp and analog preamp. In its base configuration, subtract the slide-in phono and streamer modules. Now you have a 24/192 dual-mono Burr Brown PCM 1792A DAC with USB, BNC, AES/EBU, Toslink and I²S, analog relay-switched resistor-ladder volume from -64 to +6dB in 0.5dB steps, RCA/XLR analog inputs, XLR4 and combo XLR3/6.3mm headphone sockets, remote control and a choice of black or silver finish. Add the streamer module and with it 10/100 Base-T WiFi and UPnP/DLNA support, Roon ready, Tidal, Deezer, Qobuz, Spotify and MQA Core. Add phono and with it 3-stage gain up to 60dB and 0-750pF loading in 50pf steps via dip switches on the rear panel. The option modules are user installable.