I was mad at myself for not buying the more expensive model from Planet Audio that included adjustable crossover points for each level of the equalizer. This one was on sale for such a resonable price I couldn’t refuse. I’m glad I bought this model now. Being honest with myself, I feel I have a diserning ear for music but the 4 equalizer settings high, mid, low, sub-low, are just fine. I can switch between my head unit and a mp3 player with a touch of the aux button and my mp3 player sounds better without going thru the head unit. I have fader, sub crossover, sub gain, volume, along with the EQ levels. It put’s 7v to my amps. A alpine 4ch rated at 25w rms and a precision audio 2ch rated at 250w rms bridged to a single 1000w Infinity 8″ in a sealed box. The 4ch alpine runs 2 4×6 Infinity plate spkrs in the rear and 2 6 1/2″ co-ax Alpine’s in the front kick panels. The equalizer performs flawlessly with separate outputs for Sub, front, rear, So I can split the 4ch inputs and use the fader control to balance the 6 1/2’s and the less power hungry plates. The amps may seem to small but they aren’t. Power ratings are severely over estimated by most users. A 250w 2ch bridged will power a 8 or a 10 to beyond the speakers capability’s easy. The Alpines 25w rms per channel rating is where it has the least distortion not the most it can produce. Add in the EQ pumping 7v to the inputs and you have alot more than the rated power. Esp. if you run heavy power leads and a Cap in the main lead before you split the power to the 2 amps. I highly reccomend this EQ/Sub controller to anyone. I had a $280 dollar kicker EQ for a long time and this one has better features. Also the blue background lighting around the knobs that pump to the music makes a nice effect.