Redefining Compact Power.
Efficiency Without Compromise.
The Mezzo 604 delivers the legendary reliability and acoustic properties of Powersoft’s world-class touring amplifiers in a sleek, half-rack form factor. Designed for seamless integration, it provides unparalleled flexibility in power distribution and state-of-the-art DSP for the most demanding fixed installations.
1/2 Rack Unit Precision Chassis
Engineered for Excellence.
Power Sharing
Each output channel can deliver the full power of the unit when used individually, or share the 600W total capacity dynamically across all four channels.
On-Board DSP
Full digital signal processing including high/low pass filters, parametric EQ, delay, and peak/RMS limiters for total loudspeaker protection and optimization.
Green Audio Power
Industry-leading energy efficiency reduces thermal dissipation and operating costs, making it the most sustainable choice for 24/7 commercial environments.
Flexible Mounting
Comes with a comprehensive mounting kit for 1/2 rack, full rack, wall, or under-table installation, adapting to any architectural constraint.
Technical Specifications
Core Specs
Type
4-Channel Compact Installation Amplifier
Response / Bandwidth
20 Hz – 20 kHz (±0.5 dB)
Configuration
4 Channels (Bridgeable per pair)
Power & Output
Total Power Rating
600 W (Shared across all channels)
Gain
17 dB – 37 dB (User Selectable)
Max Output Voltage
142 V Peak
Load Impedance
2Ω – 16Ω / 70V – 100V Distributed
Control
ArmoníaPlus System Manager
Physical
Chassis
1/2 Rack Unit, Steel
Finish
Black Powder Coat
Dimensions
210 x 275 x 40 mm (8.3 x 10.8 x 1.6 in)
Weight
2.6 kg (5.7 lb)
Mounting
Rack, Wall, and Surface Brackets Included
Ideal Applications
Retail Environments
Hospitality & Bars
Educational Facilities
Museums & Galleries


