Two knobs are broken, but I think it works.
ELECTRIC TESTED ONLY.
You can test and check the mixer. Unfortunately, I don't have the opportunity to check it myself.

The MGP24X 24-Channel Analog Mixing Console with DSP Effects from Yamaha is a 24-track analog mixer with digital control and features 16 D-Pre microphone preamps, 24 line inputs, 6 auxiliary inputs, and 2 effects sends. It is designed for use in live sound environments, including clubs and houses of worship.
16 D-Pre Mic Preamps with Phantom Power
24 Line Inputs, 6 AUX, & 2 FX Sends
iPhone/iPod Control & Connectivity
Record to USB Storage as WAV or MP3
X-pressive 3-Band EQ Per Channel
1-Knob Compression
Auto-Ducker, Auto-Leveler
3 Types of Reverb, 16 Digital Effects

Collection only or I can deliver to London and surrounding areas.