Audio Database

A stereo power amplifier designed by Boku Carver.

The M-4.0t uses a magnetic field system.
This circuit consists of a monitor circuit that detects the amplitude of the input signal, and a circuit that follows the input signal and controls the switching of the electric circuit at high speed. These two circuits allow a large amount of power to be supplied instantaneously in the event of a weak input signal.
In addition, since the power side can be controlled in stages by receiving amplitude modulation of the audio input signal, only the necessary amount of energy can be supplied when necessary, eliminating wasteful power consumption and realizing a high-efficiency amplifier.

The magnetic field coil, which is the heart of the power supply, is directly connected to the AC line power supply so that there is no power shortage even at high peak average.

Model Rating
Type Stereo power amplifier
Effective power 550W + 550W (4 Ω)
375W + 375W (8 Ω)
Maximum power output 450W + 450W (8 Ω)
Bridge output 1 kW (8 Ω)
Signal-to-noise ratio 110dB
Frequency band 10 Hz to 100 kHz
Harmonic distortion factor 0.5% or Less (20 Hz to 20 kHz)
IM distortion factor 0.15% (SMPTE Standard)
External dimensions Width 480x Height 90x Depth 270 mm
Weight 10.4kg