Unit for an easy and accurate detection of in-phase polarity of all homecinema-, audio- and video devices. Connecting all devices in-phase to a high-performance powersocket (like for example the Oehlbach XXL 808 or Oehlbach 404 Powersocket) avoids ground-loop circuits and preserves perfect acoustic imaging and interference-free visual display. The tester is easy to operate and is run by reliable, solid technology. The cabinet comes in a solid, high-grade aluminium finish aluminium case. The Phaser is powered by a standard 9 V batterie (included in delivery).