PSI Audio A21-M Black
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 Documents
£2,650.80 - (£2,209.00 ex VAT)
Product Description
The powerful bi-amplified output stages feature the unique “AOI” output stages and has a protection circuit, which can be monitored via the red LED on the front panel.
The active crossover, with integrated “CPR”, gives the A21-M unprecedented impulse behaviour – with excellent stereo imaging. The crossover is also optimized for maximum phase coherence, projecting a wide horizontal and vertical ideal listening area.
The electronics are housed in a unit mechanically isolated from the speaker cabinet to avoid resonance at high sound pressure levels.
Designed to work in harmony with the full range of A series monitors the PSI Audio A21-M also makes ideal front speakers in a surround sound setup or can be developed in to a more powerful system by adding the PSI Audio A225-M sub – thus protecting your investment.
- 100% Analogue – No DSP
- Perfect stereo image
- Class G/H Amplifiers
- Individually calibrated
- 5 + 1 years warranty
- Protection circuits with overload indicator
- Magnetically shielded for use close to video monitors
- Volume control on the front panel.
- Designed for stereo and multichannel monitoring
- Optimised directivity by phase coherency.
- Flat frequency response
- Real balanced input
- CPR, AOI, ALG, PSC*
Dimensions cabinet W x H x D mm |
250 x 400 x 300 |
Gross/Net Weight |
14.8 / 13.4 kg |
Response at -6dB |
38 – 23000Hz |
Continuous Max SPL, 1m |
108 dB (single) |
Program Max SPL, 1m |
119dB (pair) |
Woofer’s dim. Ext. /Diaphragm |
Ø 217 mm / Ø 170 mm |


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