Great mixer! Quality Italian made. 230/volt operation. Totally over redundant power supply. Of a size and weight of some audio amplifiers. It will work for-e-ver! Middle two channels only have bugs/ issues with the gain knob. Might be an op amp or possibly cold solder joint. Leaving the gain knob on those two channels only in the off position the channels work no problems. Just dont have the extra gain on just those two center channls, three and four I believe. All other channels work no problems. All the 100mm faders can be a bit stiff. Sometimes a little noise until worked thru. They could use a cleaning and lube same for the 60mm changeable crossfader. This is a mixer with endless amounts of headroom. Takes lots of work to push this mixers master outputs into distortion levels. Just goes and goes. If you like to slam them mixes techno style? Then this mixer is for you. Long slow blends? This mixer is for you. EQ mixing? Here it is. Two band EQ voiced with sizzling high frequencies and plenty of club bass oomph! oomph! Don't sleep on this Dj Star Disco Mixing Console.