This 50W integrate amplifier is the best I have heard for this price (1200$ Can). The sound stage is wide, dynamic and deep. You have fun to listen it!!! It is a fast and detail amplifier. The PW-4000 ES deliver strong bass. It a real decade bargin. It can drive any kind of speakers easly (like my 4 ohm Mirage speaker). Unfortunatly, this amplifier is discontinued. The successor (PW-5000, 2000$ CAN) is better but twice expensive...and more refine and powerful. Finaly, this integrate amplifier deliver a very good sound.