Soulnote A1 Integrated Amplifier

Jul 10, 2023Leon Scott
Soulnote A1 Integrated Amplifier - AUDIONATION

Soulnote A1 Integrated Amplifier sets new standards for audio performance through its meticulous attention to detail and innovative design.

Solidly and purposefully constructed, the ribbed design provides incredible strength and reduced vibration. Incorporating many components and designs used in reference calibre components, the Soulnote A1 is incomparable in its price range.

Perfectly Balanced, Discrete Non-NFB Circuits

SOULNOTE's original circuit design utilizes a perfectly balanced, discrete non-NFB (negative feedback) configuration. By examining every minute detail, including ground plane star wiring, local non-NFB regulators, direct coupling routes, and optimized drive current tuning, the A1 achieves heightened vibrancy, speed, and an expanded sound range.

High-Speed, Discrete Non-NFB Power Supply

The A1 incorporates a high-speed, discrete non-NFB power supply that includes a newly developed bifilar wound toroidal transformer, independent positive and negative windings, and parallel-connected high-voltage, small-capacity filter condensers. These refinements lower impedance, improve signal-to-noise ratio (S/N), and enhance speed.

Contactless Wiring

The A1 employs a contactless construction, eliminating connectors in the signal system. With a three-dimensional printed board assembly and star wiring in the power supply lines, it achieves lower impedance, improved S/N, and eliminates concerns about contact deterioration over time.

Output Transistor Pairing

Carefully selected and paired output transistors with low Cob (output capacitance) and high Ft (transition frequency) enhance sound image focus and three-dimensionality, contributing to an immersive listening experience. In addition, the innovative design, circuit configuration, ground plane star wiring, non-NFB power supply, contactless wiring, three-dimensional printed board assembly, and output transistor pairing, all add up to sublime sound image focus and three-dimensionality.

Relay-Switching Balanced Attenuator

Unlike conventional volume controls, the A1 employs a relay attenuator-style balanced configuration. This unique design improves clarity, enhances sound image three-dimensionality, and maintains high quality even at low volume levels.

Direct Mechanical Grounding Construction

By connecting spikes to the transformer's centre of gravity, harmful vibrations are directly expelled without affecting the unit housing. This construction ensures vibrant musical expression and high signal-to-noise ratio (S/N).

Symmetrical Housing with Resonance Control

The symmetrical construction of the A1's housing enhances rigidity balance and controls resonance. This eliminates the sense of sound containment found in rigid systems, resulting in high resolution and expansive sound. The heavyweight aluminum front panel further contributes to resonance control.

Metallic Insulators

The A1 goes beyond conventional standards by utilizing metallic insulators, which promote higher sound quality compared to plastic insulators, ensuring optimal audio reproduction.


The SOULNOTE A1 Integrated Amplifier showcases the company's commitment to innovation and audio excellence. Through its meticulous design and attention to detail, it delivers an unrivalled listening experience. With its unique features and uncompromising craftsmanship, the SOULNOTE A1 is a top choice for audiophiles seeking unparalleled audio performance.