I have these and am not using. Both are perfect and like new and garantee to work. Using the MTX in car and is plenty powerful. this amp will run an entire system easy and not take up much room in 300zx
Opti 200.2 is a older USA made 2 channel that is built to put out power. I can provide link to person with exact same amp getting 1000 watts out of it at 1 ohm. That is damn good for a amp rated a lot less. Why is it rated less? cause all old school amps were underated for competition and becasue the y were overbuilt.