REF FOUR

The B2 Audio REF FOUR is a premium 4‑channel Class AB amplifier built for listeners who demand absolute clarity and control. Its high‑current design, oversized power supply, and low‑distortion circuitry deliver exceptional detail and dynamic accuracy, while components like Sanken output devices, Rubycon capacitors, and ON‑Semi op‑amps ensure stability, musicality, and long‑term reliability. Perfect for refined SQ builds that require clean power with a truly reference‑grade sound signature.