UNCOMMON TECHNOLOGY
Class D technology is another approach to amplifier output stage design. Designed to drive subwoofers, Class D technology is highly efficient. You get increased power output, with less current draw, in a smaller footprint.

Adaptive Class D vs. Classic Class D Animation

Common Class D
Class D amplifiers are pretty common these days. It seems like everybody has one. Let's discuss the common approach. Amplifiers that use Class D technology are switching amplifiers. These amplifiers feature MOSFET transistors that operate as a switch and are used to manage the power applied to the speaker. The controlled switching power distribution creates a square wave known as Pulse Width Modulation. High frequency energy is generated from this square wave and is commonly concentrated at one point that must be filtered from the audio path of the amp. Harmonics from this concentrated high frequency energy travel into the radio frequency range, and can cause interference with the radio's reception or be picked up by the audio system's ground. That means NOISE. (See the charts on the left, click to enlarge.)

MTX Adaptive Class D - An uncommon approach

MTX changed the rules with our innovative, new Adaptive Class D Technology. With our approach, the amplifier's switching energy is constantly changing and is moved away from FM radio frequency ranges as the amplifier's load and output increases. This ensures that the harmonics do not interfere with the radio's reception and are not picked up by the audio system's ground. This improves the amplifier's overall signal-to-noise ratio, and eliminates interference that is generated by more common Class D amplifiers. In other words, listeners can enjoy all the clean, musical sounds from the radio without the interfering noise of the Class D amplifier. Technology. What a great thing when you use it right.