im using the same amp never let me down hehe

depends on ur component set then. compare its rms / nominal power is under 55W, then u can juz use two channels for the set n the bridge the other to for ur sub. like that of course u're not using ur sub at its potential, but you do save some money

if ur comp needs >= 55W, then i suggest u get a monoblock la since its a pity if ure not using ur component's potential

well im from miri hehe... i got the v12 amp for rm900 at union audio near emart there... other places around 1k