Hertz VENEZIA V5 (D class) marine power amplifier (5-channel).

Hertz VENEZIA V5 (D class, RMS 4x220W + 1x820W x 2 Ohm) marine power amplifier (5-channel).

Venezia V5 is the most-powerful five-channel Hertz marine amplifier ever, featuring 130 W x 4 (4Ω) plus 490 W (4Ω) for the subwoofer! 
Hertz Advanced Class D technology maximizes efficiency and power while minimizing heat and electromagnetic radiation - enhancing sound quality that reaches new highs with Hi-Res certification! 
High-powered channels with bridging capability deliver the output levels needed in the marine environment. 
Venezia V5 is engineered and tested for marine applications (UV, salt-fog, vibrations, high/low temperature, thermal shock) and has obtained the IPX2 certification. 
The Safe-Lock Input, Output, and Power connections streamline installation and enhance durability in the field. The fanless convection cooling system is integrated into the cast heat-sink chassis. 
The balanced fully-differential input circuitry rejects electromagnetic noise and interference. The powerful and flexible preamp filter options are far beyond most mobile amplifier capabilities. 
Last but not least, Venezia V5 is fully protected by short-circuit, overload, and thermal protections - with auto-resetting.