- Nov 1, 1998
... Return to article to continue reading.Be Quiet! is, despite the eccentric name, perhaps the most popular European manufacturer of power supply units. Today, the company retails several series and tens of power supplies, most having been designed with low-noise operation in mind. Their latest series is the Power Zone, which consists of four units (650W to 1kW) and the company claims a great balance of features, performance and price. The most powerful variation of the Power Zone series found its way into our labs. We will see how well it can perform in this review.