PSI Audio A21-M Studio Red

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Actieve 2-weg monitor

Volledig analoog circuit zonder DSP's
Gecompenseerde faserespons voor een correcte stereoweergave
Luidsprekers: 1x 210 mm / 1x 25 mm
Vermogen: 280 W + 45 W RMS
Frequentiebereik: 38 Hz - 23 kHz (-6 dB)
Tolerantie: +/-2 dB (44 Hz - 20 kHz)
Fasetolerantie: +/-45° (250 Hz - 20 kHz)
Maximale SPL (1 m): 121 dB
Gebalanceerde XLR-ingang
Afmetingen: 250 x 400 x 300 mm
Gewicht: ca. 13 kg

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Leverbaar sinds April 2022
artikelnummer 542781
verkoopseenheid 1 stuk
Speaker size 1x 9"
Amplifier power per unit (RMS) 170 W
Magnetic Shielding Yes
Analogue XLR Input Yes
Analogue Input (Jack) No
Analogue Input (Mini Jack) No
Analogue Input (RCA) No
Digital input No
Manual frequency correction Yes
Frequency range min. 38 Hz
Frequency range max. 23000 Hz
Dimensions in mm 250 x 400 x 300
Speaker Hous8ing - Woofer System Bassreflex

€ 3.222

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High fidelity - guaranteed

The PSI Audio A21-M is a premium studio monitor designed for nearfield and midfield use in professional studio environments. A standout feature is its sophisticated analogue circuitry, developed in-house, which gives this active two-way speaker exceptional fidelity and precision. Another distinctive aspect is the unconventional choice of amplification: Each frequency band is powered by a Class G/H amplifier. Compared to traditional Class A/B designs, this approach offers advantages in power efficiency and distortion reduction. Rounding off the package are a handcrafted tweeter and a CNC-milled waveguide integrated directly into the cabinet.

PSI Audio A21-M Studio Red two-way monitor, tweeter

100% analogue circuitry...

The Adaptive Output Impedance System (AOI) continuously monitors diaphragm and voice coil movement, dynamically adjusting the output impedance of both amplifiers in response to the active frequency. This minimises colouration and delivers outstanding transient response with high impulse accuracy. The Compensated Phase Response system (CPR) ensures consistent group delay and corrects phase discrepancies across defined frequency ranges using all-pass filters. The result is a precise stereo image with excellent localisation and a vivid, three-dimensional soundstage.

PSI Audio A21-M Studio Red monitor speaker, controls

...and absolutely no DSP

The PSI Audio A21-M is proof positive that professional studio monitors don't necessarily require digital signal processing to deliver outstanding sonic performance. By combining advanced analogue technologies with high-quality drivers, the A21-M achieves an almost perfectly linear frequency response across the entire spectrum. Its compact footprint makes it especially well-suited to small control rooms and nearfield setups, while its impressive maximum sound pressure level of 121dB SPL also means it can be used in medium-sized environments and at greater listening distances.

About PSI Audio

PSI Audio, a brand under Relec SA, is based in Yverdon-les-Bains, Switzerland. The company was originally founded in 1977 by Alain Roux as Roux Electroacoustique, specialising in Hi-Fi speaker development. In 1988, the company was restructured as Relec SA, expanding into PA and studio markets while producing both proprietary models and OEM products for renowned brands like Studer (1992–2003). The PSI Audio brand launched in 2004, offering premium studio monitors for professional users. These products are known for their fully analogue circuit designs and meticulous Swiss craftsmanship, ensuring exceptional performance and reliability for audio professionals.

Pairs well with the A125-M

The PSI Audio A21-M studio monitor is suitable for working on audio in fields like music production, post-production, and broadcasting. Its excellent sonic characteristics, with high-precision transient response and stereo imaging, reveal even the smallest details that may be hiding in a recording. This all makes it easy for producers to make confident decisions both on the creative and on the corrective front. For a complete 2.1 setup with extended low-end response, it would be best to combine a pair of A21s with PSI Audio's A125-M subwoofer. Because each device is perfectly configured to complement the other, this setup creates a cohesive unit with an exceptionally linear overall frequency response.

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5 / 5

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Review richtlijnen

1 Recensie

PSI a 21m oh how wonderful

II Mooha 26.09.2024

I received these after moving to a new country and before finishing my bedroom studio I set them up in my quite nice sounding living room. Ever since that moment I am thinking about getting rid of my hifi setup and order another pair of a21’s.

These speakers are so wonderful, they invite critical listening but you can also just sit back in your seat with a glass of something and enjoy the music.

Listening to classical jazz records like “Take Five” or “Kind of Blue” is like being transported into 30th street studio’s and to almost see this wonderful recording space with your very own eyes.
A pretty magical experience!

Having not yet truly mixed a project on these beauties I can’t reserve the right on a fully informed opinion but I am pretty sure I will work with these for many years to come, and, perhaps a second pair one day just for my living room!

Oh, now on to the cons… no badly mixed stuff can be played on them for the sake of listening pleasure. The speakers will communicate a definite NOOO!!!

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PSI Audio A21-M Studio Red

Actieve 2-weg monitor