Three Reference Components in One: Soulnote A3

The Soulnote A3 is a masterpiece of no-compromise engineering — it integrates Soulnote's P-3 preamplifier and dual M-3 monoblocks into a single enclosure, without watering any of them down. Completely non-NFB, GND-separated and built to a reference standard, it's the flagship integrated for listeners who want the Soulnote sound at full intensity, hand-built in Japan by ex-Marantz engineer Norinaga Nakazawa's team.

Ground Separation, Borrowed From the Flagship Preamp

The A3 brings the P-3's GND separation technology to its power amplification: complete separation of the left and right channel grounds — via non-feedback circuits and optimised layout — eliminates the ground loops and interference that quietly rob systems of clarity, opening up a wide, stable soundstage. Isolated control signals reinforce that channel-to-channel purity.

Monoblock Muscle, Passive Volume

Each channel runs a single push-pull SEPP output stage with TO3 bipolar transistors for timing accuracy, fed by two 700 VA unimpregnated toroidal transformers with SiC rectifier diodes and minimal filtering for high-speed response. Volume is handled passively — a resistor-switching control with custom relays and foil resistors keeps active electronics entirely out of the signal path. The amplifier block floats on titanium sliders, and a volume-bypass mode (fixed 22 dB gain) turns it into a pure power amp. 120 watts per channel into 4 ohms.

Why You'll Love the Soulnote A3

• P-3 + dual M-3 in one box — flagship preamp and monoblock thinking, undiluted
• Full L/R GND separation — a wide, rock-stable, interference-free soundstage
• Single push-pull SEPP, TO3 — 120 W into 4 ohms, timing-accurate output
• Dual 700 VA toroidals + SiC diodes — high-speed, high-current supply
• Passive resistor-switching volume — foil resistors and relays, no active parts in path
• Volume-bypass mode — fixed 22 dB gain for pure power-amp use; titanium isolation
• Hand-built in Japan — Premium Silver or Premium Black, 31 kg

Frequently Asked Questions

What makes the A3 special among integrated amplifiers?

It combines Soulnote's P-3 preamplifier and two M-3 monoblocks into one chassis with no compromise, and applies the flagship GND-separation technology to its power stage — an integrated built to reference-separates standards.

Can the A3 be used as a pure power amplifier?

Yes — a volume-bypass mode provides a fixed 22 dB gain, turning it into a straight power amplifier when fed by an external preamp or DAC-preamp.

What's the passive volume control?

A resistor-switching volume using custom relays and foil resistors, which keeps active electronics out of the signal path for maximum transparency.

Soulnote A3 Technical Specifications