PSI Audio A21-M | Perfectly Accurate Mid-Field Monitor

The A21-M is an astonishing, high-performance monitor designed for the most demanding audio productions. Engineered to provide full control over the sound image down to the finest details, it acts as a “large nearfield” or mid-field solution that lays every nuance of your mix bare. With its exceptional low-end reach and surgical precision, it has earned the respect of sound professionals worldwide.

Key Features

• 100% Analog – No DSP: Features PSI Audio’s proprietary analog circuitry (CPR, AOI, ALG, and PSC) for a flat frequency response and zero-latency performance.

• Handmade Tweeter: Equipped with a unique, Swiss-built tweeter that provides incredible high-frequency clarity and resolution.

• Perfect Stereo Image: Uses CPR technology (Compensated Phase Response) to ensure accurate instrument placement, reverb envelopes, and spatial depth.

• Class A/B Amplifiers: Powerful, high-efficiency amplification designed for transparency and high SPL without distortion.

• Swiss Calibration: Individually calibrated in an anechoic chamber; each unit is handcrafted in Switzerland to ensure professional-grade consistency.

Technical Specifications

Finish Options

The A21-M is available in three signature finishes:

• Studio Red

• Metal Black

• Pure White

“The quality and fundamental accuracy of the A21-M extends all the way through the audio band. Voices and acoustic instruments sound just as they should. Stereo imaging is really sharply focussed and precise.” — Phil Ward, Sound on Sound