Soulnote M-3X – Monoblock with Differential Circuit and Zero Feedback
05.04.2025 06:22 | ~1 minute read
Soulnote M-3X is a new monoblock power amplifier from a famous Japanese company. The model will replace the Soulnote M-3 amplifier and will offer twice as much current (a 1,600 VA power transformer is used), which will provide significantly better control of the acoustics.
Soulnote M-3X is based on an original circuit using a method of equalizing the transistor current gain (which continuously changes during music playback) and a common four-stage Darlington configuration with parallel push-pull scheme without losses. Another original approach used in Soulnote M-3X is the use of a copper radiator both as power spikes with the installation of transitor terminals on the board directly under the heat sink. So, the system is completely free of unnecessary wiring, and the physical decoupling of the radiator from the chassis provides a more open and airy sound.
The voltage amp module in the Soulnote M-3X uses the latest Type-R differential circuit without feedback, using only one transistor. The amplifier uses an extremely simple circuit consisting of only four bipolar transistors and ten resistors - in terms of approach, the Soulnote M-3X resembles a vacuum tube single-ended amplifier, although it uses transistors. The Soulnote M-3X is already on sale in Japan, priced at 1,911,800 yen.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Power amplifiers mono — Soulnote M-3X
Model name
M-3X
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
N/A
Output power (4Ω) (W)
160
Gain (dBu)
22
Frequency response low +/- 3dB (Hz)
2
Frequency response high +/- 3dB (Hz)
200000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (0% global feedback) (%)
0.1
Total Harmonic Distortion + Noise (100% global feedback) (%)
N/A
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
340 × 257 × 512
Weight (kg)
31
Official link
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