02 / WHY
WHY WE CREATED CUSTOM PRO
COHERENCE IS
NOT OPTIONAL.
CUSTOM PRO is PSI Audio’s dedicated line for large, high-power, and fully coherent monitoring systems designed for the most demanding professional environments: immersive rooms, post-production suites, mastering studios, broadcast control rooms, and high-end custom installations.

ALL ABOUT CUSTOM PRO
ONE ECOSYSTEM.
NO COMPROMISE.
Modern studios increasingly require multi-channel, high-SPL, phase-coherent monitoring that can scale across large rooms – without sacrificing precision. These installations involve:
- 01Acoustic engineering
- 02Calibration and measurement
- 03System design and integration
- 04Mounting solutions
- 05Long-term service and support
To ensure every installation performs to PSI Audio’s standards, we created CUSTOM PRO – an ecosystem combining specialized high-performance products, advanced installation methods and a certified network of CUSTOM PRO Partners.
03 / THE RANGE
ENGINEERED
AS A SYSTEM.
Five instruments. One coherent reference.
Built to disappear into the room.

A23-M
COMPACT
REFERENCE.
The A23-M is a compact 3-way active studio monitor, designed as a mid-field (or near-to-midfield) monitor.
The A23-M is especially well-suited for:
- Mixing and mastering in small to mid-size studios: thanks to its accuracy, flat response, and good low/high bandwidth.
- Midfield monitoring – rooms of modest to medium size where nearfields are too small.
- Broadcast, post-production, editing workflows: its pinpoint imaging, phase coherence, and wide dynamic range suit critical listening.
- Flexible setups or variable studio spaces – the rotatable module supports vertical, horizontal and wall-mounted placement.
A25-M
POWER.
WITH PRECISION.
The A25-M delivers a set of features that make it a serious reference monitor – beyond “project studio nearfield” – but close enough to be versatile for many professional uses.
- Professional mixing and mastering
- Midfield or main monitoring in mid-to-large control rooms
- Post-production, broadcast and immersive audio work
- Flexible vertical, horizontal and wall-mounted installations

THE MAIN SYSTEM
DYNAMIC RANGE.
REDEFINED.

SUB A225-M
FULL RANGE.
FULL CONTROL.
The A225-M is an active subwoofer / bass-extension meant to extend the low-end of A23-M and A25-M – or any PSI Audio monitor system – down to deep frequencies.
- Reference-grade low-frequency extension for mixing and mastering
- Film audio, sound design and bass-critical music production
- Immersive, surround and Dolby Atmos-ready installations
- Professional broadcast and post-production environments
04 / CERTIFIED NETWORK
BUILD YOUR
REFERENCE ROOM.
The PSI Audio CUSTOM PRO range gathers products that require advanced acoustic knowledge and specific installation procedures.
Due to their level of performance and customization, these models are available only from authorized PSI Audio CUSTOM PRO dealers, who can provide appropriate demonstration and system integration services.
Products included: A23-M, A25-M, A226-MAIN, A326 D-REX, SUB A225-M.


PASSION FOR PERFECTION
HANDMADE.
TESTED. CALIBRATED.
All PSI Audio loudspeakers are completely handmade in Switzerland. Each product is individually tested and calibrated in our anechoic chamber.







