Allen & Heath Qu-24, Digital Mixer for Live and Studio, 24 Mono Inputs (TRS + XLR), 3 Stereo Inputs, 4 Stereo FX Returns, 16 Buses, 12 Mix Outputs (LR, Mono Mix 1-4, Stereo Mix 1-3), 4 FX Engines, AES Digital Out, Moving Faders, Recallable AnaLOGIQ Preamps, Qu-Drive Direct Multitrack Recording / Playback on USB Drives, 800x480 Touchscreen, iLive FX Library, dSNAKE Remote Audio Port, Compatible with ME Personal Mixing System, Qu-Pad iPad App, USB Audio Streaming, DAW MIDI Control, 4 Mute Groups, Trim, Polarity, HPF, Gate, Insert, 4-band PEQ, Compressor and Delay on all Inputs, Insert, 1/3 Octave GEQ, Compressor and Delay on Main LR and Mono Mix Outputs, Insert, 4-band PEQ, Compressor and Delay on Stereo Mix Outputs, Built-in Signal Generator, RTA with Peak Band Indication, Dimensions 632 x 471 x 171 mm, Weight 14Kg, Note: the built-in 16-channel USB audio interface works only with Mac OS X; no Windows-based systems are supported. With the QU-16 you can directly record your tracks on a USB drive and then copy the WAV files to your Mac or Windows computer!