Why This Guitar

Product Highlights

Compact Powerhouse — This space-saving design allows for incredible installation flexibility, including placement in credenzas, under tables, or side-by-side in a single 1U rack space.
Unmatched Output Flexibility — Each of the four channels can be independently configured to power low-impedance (2/4/8/16Ω) or high-impedance (70V/100V) systems.
Advanced DSP & Network Control — Native AES67 support allows for seamless integration into modern networked audio ecosystems for streamlined control and audio distribution.
600W total power across 4 channels (150W per channel)
Built-in advanced 24-bit DSP with EQ, delay, limiting, and crossovers

Available Since: August, 2026
Item No.: 20502131
Local SKU: OS

Compact Powerhouse

The Mezzo 604 A packs an impressive 600 watts of total power into a compact half-rack unit chassis. This space-saving design allows for incredible installation flexibility, including placement in credenzas, under tables, or side-by-side in a single 1U rack space. It's the perfect solution for delivering high-performance audio where space is at a premium.

Unmatched Output Flexibility

Drive virtually any professional loudspeaker with a single amplifier. Each of the four channels can be independently configured to power low-impedance (2/4/8/16Ω) or high-impedance (70V/100V) systems, with intelligent power sharing to dynamically allocate wattage where it's needed most. This versatility simplifies system design and inventory for integrators.

Advanced DSP & Network Control

Take full command of your audio system with the built-in state-of-the-art DSP. Fine-tune your sound with comprehensive EQ, limiting, delay, and crossovers, and protect your investment with speaker health monitoring. Native AES67 support allows for seamless integration into modern networked audio ecosystems for streamlined control and audio distribution.

BY THE NUMBERS

Technical Specifications

Hardware & Setup

Body & Build

Finish & Colour

USBfalse

EssentialNo

Everything you receive

What's In The Box

Powersoft Mezzo 604 A 4-Channel 600W Compact Installation Amplifier with DSP and AES67
Owner's Manual
Local Warranty Card

PowerSoft

The Maker

About PowerSoft

Powersoft is an Italian audio-technology company known for energy-efficient professional amplifiers, signal processing, and system-management platforms. Its high-density solutions power touring systems, venues, hospitality projects, and major installations where sonic performance, reliability, and operational efficiency are essential.

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Expert answers

Questions & Answers

6 questions answered by aDawliah experts·avg response 2 hours

Yes, the Mezzo 604 A is highly flexible. Each of its four channels can be independently configured to drive either low-impedance speakers (like 8-ohm) or high-impedance 70V/100V distributed speaker lines.

AES67 is a standard for high-performance audio-over-IP interoperability. It allows the Mezzo 604 A to receive high-quality, low-latency digital audio from a wide range of other AES67-compatible devices over a standard network connection.

No, it features an Auto-Setup function. A single button press on the rear panel can automatically apply an appropriate high-pass filter, limiter, and gain adjustment to match the connected speakers, simplifying deployment.

The Digital Signal Processor (DSP) provides advanced control over the audio signal, including equalization (EQ) to tune the sound, crossovers to separate frequencies for different speakers, limiters to prevent distortion, and delay for time alignment.

Yes, the amplifier is designed for versatile installation and includes mounting accessories for wall mounting, as well as rubber feet for shelf or desk placement and a kit for standard rack mounting.

Can I use it in a quiet boardroom? The amplifier is engineered for quiet operation suitable for boardrooms, classrooms, and hospitality venues. While it has a fan for cooling under load, its operation is optimized for noise-sensitive environments.

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