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10 watts.
Flagship thinking.
The Soulnote A-0 ver.2 is a completely non-NFB integrated amplifier — the flagship A-3's philosophy, distilled to its most accessible form.
Soulnote A-0 ver.2 Integrated Amplifier
Popular upgrades
Pairs well with
Hand-built in Japan. Every part chosen by ear.
Soulnote A-0 ver.2 Integrated Amplifier
無 Nothing in the way
Everyone adds.
Soulnote subtracts.
The best producers know the secret: the art is what you leave out. Soulnote engineers the same way — every stage a conventional design adds to the signal path is a chance to blur the original waveform, so Soulnote removes them, one by one, and tunes what remains by ear.
Between input and output: 3 extra stages, each with a fingerprint. Between input and output: almost nothing.
Every stage does a job — and leaves a fingerprint on the waveform as it passes through.
Fewer hands on the signal. What remains was chosen by listening — part by part.
Designed by subtraction
Less circuit.
More music.
frequency response — 5 Hz to 350 kHz (+0/−1 dB), remarkably wide for a 10-watt amplifier.
dedicated headphone output into 32 ohms.
compact chassis with the same non-NFB circuit thinking as the flagship A-3.
Technical specifications
| Type | Integrated amplifier, full discrete non-NFB |
| Power output (speakers) | 10 W × 2 (8 ohms) |
| Headphone output | 3.0 W × 2 (32 ohms) |
| Pre-out | 2.0 V, High/Low mode, RCA and XLR |
| Output stage | Single push-pull, TO-220, four-stage Darlington |
| THD | 0.2% (speakers) |
| Frequency response | 5 Hz – 350 kHz (+0 / −1 dB) |
| Signal-to-noise ratio | 115 dB (IHF A) |
| Weight | 8.0 kg |
Is 10 watts enough?
Does it drive headphones properly?
Can it grow with a system?
About the Soulnote A-0 ver.2 Integrated Amplifier
Availability: Ships in 10–15 business days.
Flagship Genes, Entry Price: Soulnote A-0 ver.2
This is a purest's amplifier. The Soulnote A-0 ver.2 takes the exact design philosophy of Soulnote's flagship A-3 — a completely non-NFB circuit that, in the company's own words, is "essentially a power amplifier equipped only with a selector and volume control" — and distils it into the most accessible integrated amplifier Soulnote makes. Founded by ex-Marantz engineer Norinaga Nakazawa and voiced "100% based on the actual sense of hearing," the A-0 ver.2 chases the same vivid, alive, three-dimensional sound as its far pricier siblings.
Purist Circuitry, Punchy Reality
A full discrete, non-NFB (no negative feedback) design uses a single push-pull output stage with TO-220 transistors in a four-stage Darlington configuration — delivering 10 watts per channel into 8 ohms with the immediacy Soulnote is famous for. Those watts go further than the number suggests: a frequency response reaching an astonishing 350 kHz and a 115 dB signal-to-noise ratio speak to how clean and fast this little amplifier really is. A non-fixed top cover and direct mechanical grounding through spike feet keep vibration away from the music.
More Than an Amplifier
The A-0 ver.2 also drives headphones properly (3.0 W × 2 into 32 ohms) and offers an enhanced pre-out with High/Low mode selection on both RCA and XLR — so it can grow into a preamp or a source feeder as your system evolves. One small box, a genuine taste of the Soulnote flagship experience.
Why You'll Love the Soulnote A-0 ver.2
- Flagship A-3 philosophy — the same completely non-NFB, purist circuit thinking
- 10 W of fast, clean power — frequency response to 350 kHz, 115 dB S/N
- Full discrete non-NFB design — single push-pull, four-stage Darlington
- Real headphone amp — 3.0 W × 2 into 32 ohms
- Flexible pre-out — High/Low mode on RCA and XLR
- Sound-first build — non-fixed top cover, spike-foot grounding, ~8 kg
- Hand-built in Japan — Premium Silver or Premium Black
Frequently Asked Questions
Is 10 watts enough power?
With moderately easy-to-drive loudspeakers in small-to-medium rooms, yes, plenty. The A-0 ver.2's clean, fast, non-NFB design makes those watts sound bigger than the number implies. For harder-to-drive speakers or larger rooms, step up to the A-1 ver.2 or A-2 ver.2.
Can it drive headphones?
Yes, perfectly — it has a dedicated headphone output delivering 3.0 W × 2 into 32 ohms, enough for most demanding headphones.
How is it related to the flagship A-3?
It shares the A-3's core philosophy: an extremely simple, completely non-NFB signal path with just a selector and volume control ahead of the power amplifier, tuned entirely by ear.
Soulnote A-0 ver.2 Technical Specifications
| Type | Integrated amplifier, full discrete non-NFB |
| Power output (speakers) | 10 W × 2 (8 ohms) |
| Headphone output | 3.0 W × 2 (32 ohms) |
| Pre-out | 2.0 V, High/Low mode, RCA and XLR |
| Output stage | Single push-pull, TO-220, four-stage Darlington |
| THD | 0.2% (speakers) |
| Frequency response | 5 Hz – 350 kHz (+0 / −1 dB) |
| Signal-to-noise ratio | 115 dB (IHF A) |
| Dimensions (W × H × D) | 430 × 109 × 418 mm |
| Weight | 8.0 kg |
| Finishes | Premium Silver or Premium Black |
| Made in | Japan — Soulnote |