16-channels, 4 fully assignable sub groups Built-in 24-bit digital effects processor providing the following high quality simulations and effects, with variations:Warm Hall Reverb Bright Hall Reverb Warm Room Reverb Bright Room Reverb Warm Vocal Reverb Bright Vocal Reverb Plate Reverb Stereo Delay Mono Delay Chorus Flanger Vibrato Reverb + Delay Reverb + Chorus Reverb + Flanger Reverb + Vibrato 3 band EQ with sweepable mid band or hi-mid/low-mid controls on input channels9 band stereo graphic equalizer on main outputs (with bypass switch) Switchable low-cut filters (channels 1-12)Precision 12 segment bargraph main output meters and Peak LEDs on input channels Independent main mix, control room and headphone outputs 2-track recording IN/OUT (phono) Standard bayonet 12V lamp mount