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TECHNOLOGY
Full discrete non-NFB circuit
An extremely simple configuration, consisting merely of a power amplifier with a selector and volume control, is identical to that of SOULNOTE‘s flagship integrated amplifier A-3.
Single push-pull output stage using TO-220 transistors
The final output stage employs TO-220 transistors with low Cob and high-frequency characteristics in a single push-pull configuration. This is a high-end amplifier prioritizing quality, achievable only by limiting maximum output to 10W.
Four-stage Darlington circuit
Delivering a maximum output of 10W while employing the same four-stage Darlington configuration as A-1 ver.2 and A-2 ver.2. Even at low volumes, it demonstrates drive capability, producing air pressure changes.
Newly developed bias circuit
A newly developed bias circuit is adopted. S/N has been dramatically improved.
Enhanced pre-out function
For the pre-out output, a powerful High mode is selectable, which outputs the loudspeaker output signal directly. A Low mode is also selectable, where the output is attenuated for easier handling.
When selecting the pre-amplifier, a mode has been applied that outputs the loudspeaker output signal. A mode that cuts off the loudspeaker output is also selectable.
The pre-out terminals feature both RCA and XLR connectors. The XLR terminals are configured as: [1] GND [2] HotA [3] Floating GND, enabling the noise-cancelling benefits inherent to balanced connections. Using SOULNOTE non-shielded balanced cables such as RBC-1 allows the pre-amplifier to deliver its maximum potential.
Non-fixed top cover
The top cover is not fixed. This achieves a natural sound field and a sense of openness.
Direct mechanical grounding construction
By positioning a foot directly beneath the transformer, its vibration is released directly outside the chassis. Furthermore, employing a three-point support system via spike feet eliminates sound muddiness caused by chassis damping, achieving a vibrant and soulful sound.
SPECIFICATIONS
Output: Loudspeakers: 10W × 2 (8Ω), Headphones: 3.0W × 2 (32Ω), Pre-out: 2.0V
Total harmonic distortion: Loudspeakers: 0.2% (10Hz to 100kHz, 3.3W, 8Ω), Headphones: 0.03% (10Hz to 100kHz, 200mW, 32Ω), Pre-out: 0.01% (10Hz to 100kHz, 2V, 10kΩ)
Frequency response: Loudspeakers (8Ω, 1W): 5Hz to 350kHz (+0/-1dB), Headphones (32Ω 200mW): 5Hz to 400kHz (+0/-1dB), Pre-out (10k Ω 2V): 5Hz to 400kHz (+0/- 1dB)
Input sensitivity/impedance: LINE1,2: 0.66V/10kΩ (H), 4.0V/50kΩ (L), LINE3,4: 0.66V/5kΩ (H), 4.2V/25kΩ (L)
Total gain: H: 22dB, L: 8dB
S/N: 115 dB (IHF A network)
Power voltage: 220V AC 50Hz
Power consumption: 31W, 20W (idling)
Dimensions: 456 (W) × 109 (H) × 418 (D) mm
Weight: 9.0 kg
Included accessories: Spikes, Power cable
Designed and Made in Japan
