RME Fireface UCX - 36-Channel USB/FireWire Audio InterfaceThe Fireface UCX from RME is a USB FireWire digital audio interface that provides thirty six channels of audio (eighteen inputs and outputs) with all channels available simultaneously. It features two, low distortion, digitally controlled microphone preamps with up to 65 dB of gain, excellent signal to noise ratio, and a flat frequency response. Each channel can be individually switched to deliver 48V phantom power.