Soundcraft Delta Mixer, 16 channel strips, 4 sub groups and stereo master channel. I had the stereo master channel rebuilt by Jim Williams of Audio Upgrades. The first 14 input channels are the mono deluxe mic channel with 4 band EQ. The 2 middle bands have sweepable frequency, the bass and treble are fixed shelving. There are 4 aux send knobs with 3 & 4 switchable to aux sends 5 & 6. Channels 15 - 16 are stereo line input channels with fixed frequency EQ. That adds up to 18 channel inputs. Each can feed any of the 4 subs or the stereo master. The subgroup channels include 8 returns with 2 band EQ to give you a total of 26 inputs. The only thing that does not work is the talkback mic. Not sure why but it could be fixed. I always just used a mic into an input channel for talkback. I had the power supply rebuilt and upgraded with bigger caps and that improved the sound. The owners manual is available online. I have a flight case for it too since I bought it used from a sound company.
