Aavik U-301

Resonant-mode power supply

While linear power supplies are widely respected in high-end audio, they are not without limitations. The charging behavior of large capacitor banks creates current pulses and transient noise that can affect system stability under dynamic conditions.

For this reason, Aavik integrated amplifiers employ a high-performance switching power supply specifically engineered to complement the Class D amplification stage. Operating in power-factor-corrected resonant mode, it generates smooth, sinusoidal switching waveforms that reduce high-frequency noise while maintaining very high efficiency.

As power demand increases, the supply responds by increasing its operating frequency, enabling rapid peak-current delivery when required. The result is a highly responsive, low-noise power supply that maintains stable energy delivery, preserving dynamic integrity and overall system coherence.

Mechanical Grounding

Control of mechanically induced noise is an important aspect of high-performance audio design. Vibrations from supporting surfaces, as well as those generated within the enclosure, can influence sensitive electronic circuits and affect signal integrity.

To address this, Aavik utilizes resonance-control technologies developed by its sister company, Ansuz. The U-301 is equipped with Ansuz Darkz Feet, which reduce the transmission of structure-borne vibrations into the enclosure. Performance can be further enhanced with optional Ansuz Darkz resonance-control devices, which use precision ball-bearing assemblies and exceptionally hard materials to dissipate unwanted vibrations and guide internal resonances away from the enclosure.

By controlling the flow of vibrational energy rather than attempting to eliminate it entirely, this approach lowers the mechanical noise floor and contributes to improved clarity, stability, and resolution. All Aavik products are designed to accommodate Ansuz Darkz devices for further performance optimization.

Noise Rejection

Acoustic, electrical, and airborne noise are among the primary causes of performance degradation in audio reproduction. At Aavik, minimizing both internally generated noise and sensitivity to external interference is a fundamental design principle. Every aspect of the U-301—from output stages and power supplies to cabinet construction and internal wiring—is engineered with this goal in mind.

This is particularly important in a unity amplifier, where the signal must be managed seamlessly from the digital to the analog domain while maintaining precise control of connected loudspeakers. To support stable, low-noise operating conditions, the U-301 incorporates dedicated noise-reduction technologies throughout its design.

One example is Ansuz Gold Anti-Aerial Resonance Coil (Gold AARC) technology, integrated into the internal wiring near the speaker terminals. Cables and shielding can act as antennas for airborne RF noise; Gold AARC counteracts this by absorbing unwanted RF energy in one coil and eliminating it through a corresponding counter coil. The technology also reduces the cable’s tendency to absorb and propagate RF noise.

The latest version of Gold AARC incorporates a zirconium resonator wound with silver- and gold-plated threads, further enhancing its noise-suppression efficiency and contributing to greater clarity, transparency, and resolution.

Advanced Cabinet Construction

Although the U-301 is a fully integrated Class D design, many of its core principles were established during earlier Aavik development programs. Building on this foundation, the design evolved through a close collaboration between Flemming Erik Rasmussen and Michael Børresen.

The exterior design, created by Flemming Erik Rasmussen, builds on the visual language of the Axxess Forté and Aavik I-x88 series. Central to his philosophy is that design must always serve a purpose. As such, the enclosure functions not only as a visual statement, but also as a structural element that supports resonance control and helps preserve the integrity of the audio circuitry.

The U-301 features distinctive aluminium cooling elements, a substantial front-mounted control knob, a large LCD display, and three integrated pushbuttons. Thick wood-based laminate top and bottom plates are combined with an aluminium frame, chosen for both their mechanical properties and refined appearance.

The result is a design that balances function and aesthetics while creating a cohesive visual bridge between the Axxess and Aavik product families.