I would like to transfer my old Directed Xtreme 12" sub to my other vehicle, as it would be the most bang for the buck sound upgrade at the moment.

I want to get another amp for it as the old Taiwan "V12" amp seems to be underpowered, it shared duties powering my Targa separates,

Vague specs, not so Xtreme
12" SVC 4ohm
400W peak/200w RMS
30hz-1.5khz
Sealed box

What would be my options for the amplifier? Mono would be okay since I like to keep the speakers stock for now. Budget meal lang sana... If meron rin kayo ma-recommend na shop around Pasay or Makati, include nyo na rin. Last option ko na sa Banawe. Thanks