This is the Cerwin Vega VCU81 1-Channel Class D Micro Amplifier.
It is one of the smallest 1 channel amplifiers we carry, and that we have seen!
1-Channel Micro Amplifier High-Power Full-Range Digital Class D Advanced Technology IR Chipset
RMS Power: 500W x1 @ 1 Ohm / 300W x1 @ 2 Ohm / 175W x1 @ 4 Ohm
Marine Grade Certified
Surface Mount Component Technology
Conformal-Coated IPX Certified 4-Layer Black PCB
Remote REM/DC/VOX Turn On Trigger
Variable/Switchable Crossovers On Multi-Channel Models
Uniform Heatsink Chassis Size/Dimensions (Exlcuding 5-Ch Model)
Compact Universal All-Weather Application
Remote Level Control Included
Dimensions: 7.7" x 4.02" x 1.4"