Extremely Clean and Clear. For Max Performance use 4 gauge. 8 gauge will work, but not the same as 4 gauge

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I purchased this Amp from Online Car Stereo. First off, let me say that all PPI amps rock. This is my second one and I have not had any trouble with the first one. The amp is very clean and clear. The power rating is very under rated. The amp is rated at 40x4, but its more like 90x4. The amp is very well built and it can only improve your system. I highly recommend using this amp for Mids and Highs. However, if you decided to put this puppy on some subs, no worries. It can handle it with easy

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Precision Power PC 2100 on my subs. This amp great also.