The Kharma Matrix amplifier is a proprietary switching amplifier. It uses a unique pulse control scheme that takes feedback only from the speaker terminals. No feedback loop from the switching output is used.

The result is extremely low output impedance over the entire bandwith. Damping factor is >400, up to 2 kHz and >100 at 20 kHz.

The frequency response is DC-50kHz (+0,-3dB) and is completely independent of the load impedance.
THD and IMD are very low (<0.02%) and completely independent of frequency, like a good zero-feedback amplifier.

The plot “output impedance” shows in red the output impedance of a “digital amplifier”. In blue that of the Matrix amplifier.

The plot “frequency response” shows the frequency response of the Matrix amplifier for loads of 3 ohms (red), 6 ohms (green) and open circuit (blue). The difference between the graphs is smaller than with most, if not all, class A amplifiers.

The “THD versus frequency” are just as flat as with very good zero-feedback tube amplifiers, only 100 times lower. A flat THD means that IMD results are also good.

The “THD versus power” plot (6 ohms load) shows that low THD is available at all listening levens.

The amplifier operates without an oscillator which removes all problems associated with oscillator jitter. This translates into very good SNR> 110dB.

Discrete transistors and FETs are used entire throughout the construction.