Audio Research Reference 20 Preamplifier

New Architecture

At the heart of the Reference 20 is an entirely new platform engineered to eliminate sources of distortion previously accepted as unavoidable.

The traditional stamped chassis has been replaced with a sophisticated multi-metal, layered construction designed to disperse and control resonant energy. Critical circuits are mounted on custom suspended, mass-loaded boards that further isolate the signal path from mechanical influence.

This structural approach is not cosmetic but rather foundational. By addressing resonance at every level, the Reference 20 preserves low-level information and spatial detail with unprecedented focus and articulation.

The power supply of the Reference 20 has been comprehensively redesigned to elevate both performance and reliability.

Through advanced regulation and the application of the latest component technologies—including next-generation film capacitors—noise on the regulated rails has been reduced by an order of magnitude. This dramatic lowering of the noise floor allows the preamplifier to resolve the finest musical nuances while maintaining composure during dynamic extremes. Articulation and speed of dynamic onset are state of the art with no sacrifice of body or musical flow.

Occupying a single chassis, the REF20 excels over its formidable two-chassis predecessor in all respects, even with performance attributes usually associated with amplifiers: authority, impact, and resolving the extreme outer envelope of the recording space.

The result is a presentation that is at once more revealing and more natural—effortless, unforced, and profoundly transparent.