Soulnote A-3core – a mighty power amplifier
24.12.2024 06:56 | ~1 minute read
Japanese manufacturer of High End electronics, Soulnote presented a stereo (2 x 120 W at 4 Ohms) power amplifier A-3core, which implements the concept of "dual mono". Each channel of amplification is powered by a separate toroidal 700 W transformer.
A push-pull output stage on high-current bipolar transistors TO3 (Metal CAN-type) with a copper cooling plate (which is also a power bus) allows Soulnote A-3core to achieve hyper-realistic sound. Among other things, a four-stage Darlington configuration with super-powerful driver and pre-driver and a special ground bus are used.
In its products, Soulnote uses a special mechanical concept, which is also implemented in the Soulnote A-3core: the design of the massive device does not use tight screw connections of individual elements for acoustic reasons. The amplifier chassis and the top and bottom covers are not tightly fastened. In particular, the amplifier block has a transversely movable three-point structure with titanium guides. So, thermal expansion and contraction do not cause stress on the structure.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Power amplifiers stereo — Soulnote A-3core
Model name
A-3core
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
24000
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)
2 x 120
Gain (dBu)
N/A
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) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.27
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
454 × 189 × 435
Weight (kg)
29
Official link
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