What Is Great, Is The Mono Channel, Doubling As A Sub-Output. Using The Built In Crossover Adjusted To 80hz, Mono Output (Split)Into (2) Sends Dumped Into A BBE Sonic Maximizer, Then Sub Woofer Amp Sections. Massive Bass & Easy To Use. This Boards Graphic EQ Output To The Main Sends Requires Another Gain Stage Rack-EQ (Alesis) Adjusting Bottom End Lift To Maximize Full Range Bass To The Mains. Mic Pre's Are A Bit Bassy, Tuning More High End Is Needed For Clear & Bright Vocals. On Board Effects Find Reverbs Work Best, Others Are Thin & Weak. After You Work With This Mixer & Adjust Your Gear To Accomodate This Unit, You Will Be Blown Away With The Potential Of This Mixer, Incredible, With Professional Sound, - Un-Heard Of In Any Mixer. The Beringer Boy's Are Blowing The Whole Industry Away With High Quality At Great Prices. It Takes Time & Patients To Get Any Sound Device Working In Its Sweet Spot. Thank You Beringer ~ "Great Job".