i have this amp bridged to one 12 inch 4ohm pioneer 12 sub. the bass is fast and responsive, the crossover levels are very good and useful. size is just right for an under trunk mount. there is a cool bright blue light and I used the low level speaker input it came with, and works great with it grounded there is no noise or popping sound. the power SSL has is way more than i need but its always good to have more in case you need it. The trick to the Bass boost controller to work is to turn the bass boost on the amp all the way down and use the bass boost on the remote to control it whenever you need it. I cant understand why people say it doesn’t work. Had the amp running for an hour and it was warm in the summer heat nowhere near Hot. Must buy for anyone looking for some good bass.