Perfectly accurate mid field monitor

Redefine the way you produce!

It is an astonishing monitor used for the most demanding audio productions, allowing the user to be in full control of the sound image in all regards down to the finest details.

Main Features

Power: 280 + 45W
Frequency Range: 38Hz – 23kHz
Peak max. SPL@1m: 121dB
Typical listening distance: 1 to 3m
100% Analog – No DSP
Flat frequency response
Perfect stereo image
Handmade Tweeter
Class G/H Amplifiers
Individually calibrated
5+1 years warranty
Handmade in Switzerland

Your success story with the A21-M
Only you know where your story begins, and who knows where it will take you?
With the A21-M, you certainly know what you hear: a precise replica of what the sound was intended to be.

Make sure that little details cannot sneak past you during mixing, the A21-M lays them all bare before you. This quality has earned PSI Audio the respect of sound professionals all around the world. As a large nearfield monitor, the A21-M puts the entire soundstage right before your ears with peculiar precision, as lifelike and natural as a reproduction can possibly be. Stop listening for little mistakes – with the A21-M you just hear them. We must warn you though: once you have experienced the real thing, you will not be able to accept anything less.

PSI Audio New A21-M (2022)
“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. The new tweeter is a success also…”
Phil Ward, Sound on Sound

Perfect Stereo Image
Stereo is more than just volume differences between the left and right channels. Phase relations are paramount to determine the accurate position of a signal in the acoustic space – and hence equally important in the development of PSI Audio speakers. The accurate phase alignment provided by PSI Audio CPR technology recreates the vivid spatial listening experience as it was intended. Instrument placement, reverb envelopes, even compression artefacts are easy to identify with the phase-corrected reproduction of PSI Audio speakers.

Expand the bottom end

While the A21-M already reaches down to 38 Hz, its low end can be extended further by adding one or two subwoofers to the system. An A225-M or a pair of A125-M subwoofers will unleash the full potential of the A21-M at any listening level, translating its accurate reproduction qualities into the lowest registers.

Data A21-M [Unit]
Potential peak power 280 + 45 W
Continuous max SPL@1 m 106 dB
Short term max. SPL@1m 110 dB
Peak max. SPL@1m 121 dB
Signal to noise ratio (S/N) 98 dBA
Bandwidth at -6dB 38-23'000 Hz
SPL tolerances ±2.0 dB
Phase tolerances ± 45 (250 Hz – 20 kHz) deg
Dispersion (H x V) 80 x 30 deg
System 2 ways
Crossover frequency 2400 Hz
Woofer ext. diam. 240 mm
Woofer ext. diam. 9.4 in
W. diaphragm diam. 172 mm
W. diaphragm diam. 6.8 in
Tweeter ext. dim. 100 mm
Tweeter ext. dim. 3.9 in
T. diaphragm diam. 27 mm
T. diaphragm diam. 1.06 in
Dimensions W x H x D 250 x 400 x 300 mm
Dimensions W x H x D 9.9 x 15.8 x 11.9 in
Net Weight 12.8 Kg
Net Weight 28.2 lbs
Input connector 1 x XLR F / 3P
Warranty 5 (+1) years

Flat Response

Individually tested
Each speaker is individually calibrated in our anechoic chamber and is delivered with its frequency response sheet. A proof of quality.

A21-M – The perfect compact 2-way studio monitor
Sitting comfortably in between typical midfield systems and traditional nearfield monitors, the A21-M packs the punch of the larger speakers while retaining a comfortably compact size. It performs well in both scenarios, making it the perfect solution for studios who require the power of a midfield system without having the space for one.

A21-M – Who is it for?

The A21-M is exceptionally suited to all levels of music production, from the recording/producing stage to mixing and even mastering. Broadcast and post pro applications will also benefit from its outstanding transparency and fidelity.

With its outstanding reach in the low end and its still compact size, the A21-M is both versatile and uncompromising in its approach, making it the perfect candidate for all sorts of studios. You can hardly go wrong with an A21-M.