The Allen & Heath GL2400-424 has many uses.
As pioneers of dual functionality, Allen Heath have ensured that every detail of the concept has been carefully implemented with no controls redundant. When mixing Front-of-House, the monitors can be set pre-insert as well as pre-EQ to prevent your house mix EQ and compression affecting the stage mix. Per channel aux switching on the Allen & Heath GL2400-424 means you can mix pre-fade with post-fade sends such as theatre radio mics and sound effects. As a monitor console, the aux masters get faders, inserts, mutes, meters and balanced XLR drive. You even get a fader controlled engineer' wedge feed.
The Groups and LR mixes are still available to create yet more sends. In monitor mode the Allen & Heath GL2400-424 can provide up to 10 mixes, for example 6 wedge and 2 stereo IEM.
LR and M main outputs
4 Audio groups with pan control
6 Auxiliary sends with per-channel pre/post fader switching
2 stereo channels each with mic and dual stereo line inputs
Proper dual functionality for FOH and/or 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
Stereo channel line inputs can be independently routed to LR
Stereo channel mic input breakpoints for cross patching into matrix.