I have a harrison labs 1600.2 amp. It is rated at 1600 watts at 2 ohms and 800 at 4 ohms. Go to hlabs.com for specs. I will include the fmod that comes with it. The retail on this is around 600 dollars. It is in good condition and it is quite powerful. Email me at theairhead@hotmail.com with offers or trades. for trades, i would consider any class d amps at 1200 or more watts into 2 ohms.