I recommend this item because it gives you complete control just about of tones in your music instead of using your factory deck EQ. Use the boss EQ600 to tune the music to exactly were you want it before. I had certain tones in my 4 speakers that were not as loud after turning it. It has bass hit and high it is an all metal case very durable and as long as you tune the volume control on it the music will not distort. This item deserves 5 stars in all cases cheap and usable looks cool metal frame makes it very durable has over 20 tuning knobs including bass control and a switch to make rear RCA's go to sub as well in case you don't have a connection in your deck and has high inputs for those people that don't have 6 RCA connections to use.
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