Now some specs shall we lads and lasses?
Manufactures specs:
3500wrms @ 1ohm
1500wrms @ 2ohm
750warms @ 4ohm
All at 14.4 volts.
However these amps are under rated.
Its been bench tested: 11.9v @ 1ohm it produced 3660wrms

Brand x double twin 10 in box. 2.6 cuft internal. 3 ports open tunes it to 35hz. 2 ports open tunes it to 28hz 1 port tunes it to 20hz.

Selling on behalf of a friend, ill update with prices when i get to talk to him.