Class XD™ Technology

At the core of the 840A’s strength is a patent pending, Class XD (crossover displacement) technology.

This unique design gives pure Class A operation at low levels, moving smoothly into an enhanced version of Class B at higher levels. This system should not be confused with Class AB, which inherently generates greater distortion at high levels than a pure Class B design.

XD technology feeds a controlled current into the output stage in a new way so that the usual Class B crossover point no longer occurs at zero volume - the worst possible position in terms of distortion – but at a significant output level.

The result is a smooth and linear transition between the two modes of operation, which differs significantly from the abrupt, distorted gain transition of a Class AB amplifier.

Choose another product: Azur 540C, Azur 540D, Azur 640C, Azur 640H hard disk music server, DVD55, DVD57, Azur 640T, DVD79, DVD89 HDMI DVD Player, Azur 540R, DVD77, DVD77, M1+ Learning Remote, Azur 540R (Version 2) 6.1 AV Receiver, Azur 640A, Azur 540A.