Can I listen to Bluetooth and USB audio at the same time? Related Searches bluetooth Arena 9 simultaneous audio audio inputs USB audio Optical audio SteelSeries Yes, all inputs including Optical and Bluetooth are mixed together. Related articles Can I use the Arena 9 without an USB-C port? Arena 9 Setup Does 5.1 surround work on PlayStation? How can I get 2 channel audio to play through all my speakers? Can I turn off the RGB LEDs?