Review on Sound Storm EV4.400 Evolution Car Amplifier - 🚗 400 Watts, 4-Channel, 2-8 Ohm Stable Class A/B, Full Range by Deshaun Fisher

This is not a very good amplifier and cannot meet the advertised specifications. I found some information about him. It uses two CD7377CZ 4-channel integrated amplifiers (there are no discrete power transistors in the amplifiers) that are only rated for 4 channels at 7 W or 2 channels at 24 W/channel bridged at 10% THD. YES, the spec says 10% THD! These integrated amplifiers are then mounted on caps rather than directly on the main heatsinks (which means they're mostly just for show). It was also a very loud amp. I had an awful high and needed to get rid of it. I replaced it with another amp with exactly the same wiring and there was no hum. This amp is inferior to many aftermarket head units, let alone being sold as an external amp.