I purchased two of these amps, one per 18" sub-driver. Their performance is outstanding. Excellent low frequency handling with very low distortion and an ultra-low noise noise floor. The power is excellent and the amplifier maintains a firm control of the subs at all times. I prefer a sealed cabinet rather than a ported version for tighter, more accurate bass. I am very satisfied with the Planet Audio amplifier and would readily recommend them to anyone who’s looking for an excellent quality product both in terms of performance and price. Also, the fit and finish are as good as anything available. Planet Audio has done their homework and created an amplifier that is not just extremely powerful, it’s great sounding and is great looking. It’s definitely designed to be displayed and you will want to show it off. The price alone makes it a worthwhile purchase, but you get so much more. I highly recommend it.