IMEX Taigen Tanks are hobby grade 1:16 replicas of the real tank. These tanks are highly upgraded when compared to other RC Tanks with a metal gearbox and metal tank treads.
This is built into the K4020U MOSFET amplifier in order to display amplifier power output. The meters are mounted behind the correct scale which is also illuminated according to the speakers connected to the amplifier (4 or 8 ohms). When the amplifier is switched into a bridge configuration then both meters may be connected in series.