Soundcraft Signature 10 Analogue mixer with USB interface and built-in effects. Lights come on but not from the channels 1-4 (see photo please). Dont know if this is a setting. I cannot test it. All small lights also come on. 2 slider knobs missing, (see photos please). Any question please ask. As I can not test it: bought as seen. High-Performance 10-input small format analogue mixers with onboard effects. Iconic Soundcraft® Ghost mic preamps with ultra-low noise performance. Renowned Soundcraft® Sapphyre British EQ with sweepable mid-bands per channel. Lexicon® Effects Engine featuring award-winning Reverbs, Delays, Choruses and Modulations. Dbx® Limiters (High-ratio Compressors) on input channels. 2-in/2-out USB audio playback and recording. Switchable Hi-Z inputs for guitars, basses and other instruments. Hi-Pass Filters (low-cut) and 48V Phantom Power on all mic channels. Comprehensive Soundcraft® GB Series audio routing. Robust metal construction for tour-grade build quality and reliability. Internal universal power supply.