Description: 90 Day Money Back Guarantee. This item is insanely loud and has clean sound! If you are not happy in 90 days we will take the item back for a full refund!. The Rockville RPM109 V2 is a 12 channel wood cabinet powered mixer with USB/SD input and LCD display. This mixer is one of the best sounding powered mixers on the market. This will compete with the most premium brands on the market in terms of sound quality and how much power this has. I personally tested our RPM series of powered mixers and I was completely blown away! I ran this to (2) Yamaha speakers and even with the volume turned up half way these were insanely loud! When I cranked the volume to 90 % the clarity was just un-believable. The power amp built into this mixer is 450 x 2 RMS @ 8 ohms and 600 x 2 RMS @ 4 ohms. We rate the RMS very strictly the way famous brands like Mackie rate their items. We also supply you with program and peak ratings but RMS is the true continuous output power you should look at. This powered mixer is rugged and tough! It is enclosed in a high quality wooden enclosure which can take a real beating! This model has 12 channels making it versatile enough for most parties and gigs. It has an adjustable 3 band EQ (high, mid, low) on each channel along with a dual 7 band master EQ. We added built in Bluetooth, USB, and SD players giving you a lot of playback options. We upgraded our FX module from 16 analog effect to 24 digital effects that are way better and more useful. We added a USB Interface for playback or to record your performance in your DAW. We added a mute button for channels 1-10 which enables you between sets to must all the channels accept the aux/Mp3 channels