Every success story demands to be continued! The new QS-Four 4-Channel Class D Nano-Amp is based on ESX’ QS-Two design concept. Tiny, handy, yet just as powerful as its model sister, it allows to run speaker systems virtuosity while remaining absolutely stable even under critical power loads. Thanks to its great bandwidth, low distortion factor and sensational efficiency, it is perfect for HD audio enjoyment. Thanks to decades of development experience, ESX has mastered the construction of Class D power amplifiers so perfectly that the QS-Four impresses with practically no EMC interference. Despite its smallest, space-saving dimensions: the QS-Four is actually far too pretty for a hidden installation…