Allen & Heath GL2400 Features: 16 Channels - 14 mono + 2 stereo LR and M main mix 4 Audio groups with pan control 6 Auxiliary sends with per-channel pre/ post fader aux switching 2 stereo channels each with mic and dual stereo line inputs 7x4 Matrix Proper dual functionality for FOH/ Monitor mixing M can be configured as LR sum, Wedge, or Aux-Fed Sub or C master Recording capable with channel direct outputs Matrix external inputs with level trims and common input capability Responsive 4 band, 2 sweep EQ Individual phantom power and Polarity switching Dedicated Channel, Master and stereo Monitor meters Internal jumper plugs for pre/ post-EQ aux, direct out and other options Mutes on all fader masters Assignable talkback 1kHz oscillator / pink noise generator 2-track monitoring and replay to LR Headphones and local monitor outputs Dedicated stereo monitor meters Electronically balanced XLR outputs with 26dBu drive capability Preamp 34dBu maximum input capability for mic or line Ultra low noise mix head amp design Internal power supply with redundant backup supply input Metal jacks, gold-plated XLRs, sealed pots and switches Individual circuit card assembly with nutted pots