The Mezzo 604 A heralds the same levels of reliability, build quality, and acoustic properties of any Powersoft amplifier platform, in half the size. Extremely flexible, the "A" versions of Mezzo offer remote control and monitoring of all vital functions. The small form factor allows it to be mounted anywhere thanks to the included mounting kit. The Mezzo 604 A heralds the same levels of reliability, build quality, and acoustic properties of any Powersoft amplifier platform, in half the size. Extremely flexible, the "A" versions of Mezzo offer remote control and monitoring of all vital functions. Small form factor allows mounting anywhere with included mounting kit..PZA MORE SPECS