The Autotek ATK2/3 is a perfect sound processer if you want increase your distortion free bass ! It will at least double your bass!! It does not increase the over all volume much but the sound output is phenominal ..The definition of the separate frequencies is very profound . If you want to take your sound system to the next level and increase your bass output , this is a MUST have !! It will be the best 80 bucks you ever spent . I was astounded by the amount of crystal clear bass this thing put out . The great thing about this unit it has it has RCA jacks for front rear and sub inputs and outputs which is far superior then only having one input that is separated internally for the 3 outputs . I strongly suggest this product for any audio application . I have been into audio systems for over 37 years , so I do have a little knowledge !! Buy one and thank me later .