All GPX models attract with an almost unbeatable price-value-ratio and have what it takes to be bestsellers. These amplifiers convince with proved quality and a sophisticated construction for a long term in-car audio performance.The fair and reasonable pricing and the easy walk-over controls of the GPX amps are perfect for all car audio rookies. A highlight in this series is the new 2200 watts digital mono block GPX2200.1D. This amp is equipped with a powerful bass boost up to 18dB, ready for a perfect subwoofer performance. With an additional GPX2200.1D, you are able to double the output power via master/slave connection for driving a very power-hungry subwoofer.