A-3

Soulnote · A

A-3

Uncompromising flagship amplification delivering absolute temporal accuracy and spatial realism.

A masterclass in solid-state engineering, the Soulnote A-3 dismantles the traditional limitations of integrated amplification. By transplanting the absolute ground isolation of the flagship P-3 pre-amplifier and combining it with the high-current drive of the M-3 monoblocks, this component bridges the gap between single-box convenience and ultimate separate performance. Every element is built to protect the time-domain integrity of the musical signal. Positioned at the absolute zenith of the Soulnote range, the A-3 is a statement piece that treats electrical and mechanical isolation with fanaticism. Rather than relying on negative feedback loop correction to polish static technical specifications, the amplifier utilises a naked, fully balanced non-NFB design. The result is an electronic component that behaves entirely as a transparent conduit, completely unbothered by ground loops or cross-channel interference. Sonically, the A-3 delivers an exceptionally fast, uncoloured, and authoritative performance that relies on dynamic agility rather than artificial warmth. The low-end grip is immediate and clean, while the mid-range and treble unfurl with a remarkable three-dimensional spaciousness that places instruments precisely in space. It is an amplifier designed for those who demand separation, immense structural control, and the visceral timing of a live musical event.

Key Features

01

Complete Ground Separation

Implements groundbreaking circuitry that ungrounds the left and right channel power supplies from the chassis, entirely eliminating cross-channel ground loops.

02

Single Push-Pull Output Stage

Utilises a simple single push-pull configuration with TO3 metal CAN-type bipolar transistors to maintain impeccable time-axis accuracy.

03

Copper Bus Bar Heat Sink

Features a lightweight copper plate that connects the power supply and amplifier boards directly, eliminating internal wiring and parasitic inductance.

04

Unfixed Mechanical Housing

Implements a three-point lateral sliding structure with titanium sliders, allowing the top cover, terminals, and amplifier blocks to float and shed resonant energy.

Ground Isolation & Power Supply

Chapter 01

Ground Isolation & Power Supply

At the core of the A-3 is a pioneering approach to noise floor management. By completely decoupling the grounds of the left and right channels, Soulnote eliminates the subtle degradation caused by cross-channel currents. Power is delivered via dual 700VA unimpregnated toroidal transformers mounted vertically to align magnetic lines parallel to the circuit board, partnered with high-speed silicon carbide diodes for instantaneous current delivery.
Mechanical Agility

Chapter 02

Mechanical Agility

Traditional rigid coupling traps acoustic and mechanical energy within an amplifier chassis. Soulnote rejects this approach by utilising an entirely unfixed structural architecture. The main amplifier blocks rest on titanium sliders, while the AC inlet, terminals, and top plate are left intentionally loose, ensuring that component vibration is expelled seamlessly rather than reflected back into the audio path.
The Purity of Relays

Chapter 03

The Purity of Relays

Volume attenuation and input selection are managed by custom RSR relays and high-precision naked foil resistors. This system avoids the sonic degradation inherent in conventional electronic potentiometers, ensuring the audio source enters the gain stages completely unaltered. This relentless refinement results in a noise floor so low that the recording space itself is reproduced with striking holographic realism.

Specifications

Model nameA-3SE (Premium Silver) / A-3BE (Premium Black)
Input3 (balanced), 3 (unbalanced)
Output1 (loudspeaker)
Volume bypass1 (balanced), 1 (unbalanced)
Rated output120W + 120W (4 ohm)
Total harmonic distortion0.27% (1W, 8 ohm)
Frequency characteristics2Hz to 200kHz (+/-3dB, 1W, 8 ohm)
Input sensitivity480mV
S/N110 db
Maximum gain33 db
Power voltage230V AC 50Hz
Power consumption180W/86W (during idling)
Maximum external dimensions454(W) x 184(H) x 407(D)mm
Weight31 kg
Included accessoriesSpike board, spikes, spacer (for Spike board floating), remote controller, power cable