The Allen & Heath CDM48 dLive MixRack audio mixer 48×24 I/O for dLive systems is a 7U rack-mountable device that can operate independently, with or without a control surface. It can handle 128 input channels, 64 mix busses and over 400 soft-patchable system inputs and outputs, all independently assigned. There are 16 rack-mounted stereo FX engines with dedicated stereo returns, and 24 DCAs. The rack unit contains the mixing engine. This mixing engine operates at a sampling rate of 96 kHz and uses FPGA technology for digital signal processing. The system latency from analogue input to output must not exceed 0.7ms. The mixer provides 48 high-quality XLR inputs and is capable of handling microphone or line signals and will feature remote-controlled analogue gain adjustable in 1 dB steps, a 20 dB PAD and phantom power. All input channels are configurable mono/stereo and will have access to any of the unit’s hardware inputs or remote inputs via expansion options. Mixing buses are configurable as any combination of mono/stereo aux sends, groups, mains, FX sends or matrixes. All output channels can be routed to any of the unit’s 24 XLR line outputs, or to the remote output via the expansion options. All input channels contain the following processing: Trim, Polarity, High Pass Filter, Low Pass Filter, two insert points, Gate, Parametric EQ, Compressor and Delay. All output channels contain the following processing: External Input, Trim, Polarity, Insert, Parametric EQ, Graphic EQ, Compressor, Delay. Parametric, Graphic EQ, Compressor and Delay. Channel processing also provides high-quality emulations of classic compressors and GEQs. These emulations can be inserted on any channel without using the internal FX and without the need for external plug-ins or licences. Allen & Heath CDM48 also offers the ability to return signals processed by the FX racks to other mixes via dedicated FX input channels with PEQ, assigned as sources to the input channels, cascaded to another FX rack via internal patching, or routed to an output socket or interface channel. output socket or interface channel. A global source option for direct input channel outputs must be available in the routing screen. There is also a single 128-channel I/O port for an optional digital interface module. Optional interface modules include: MADI, EtherSound, Dante, Waves SoundGrid and ACE. An Ethercon port is provided for connection to the control surface via the Allen & Heath gigaACE protocol. This connection carries over 300×300 channels of uncompressed 96kHz audio, control data, and tunnelling of third-party Ethernet traffic. third-party Ethernet traffic. An Ethercon port carrying up to 32×32 channels of uncompressed 96kHz audio is also provided for I/O expansion. The unit must be equipped with a BNC connector for Wordclock input and output. A headphone output is also provided. The unit shall be equipped with a fixed power supply accepting AC mains voltages of 100~240V, 50/60 Hz, 175W max via a 3-pin IEC male connector connected to earth. The Allen & Heath CDM48 mixer allows 500 scenes to be stored.