I use a 4ch amp and bridge 2 ch for the sub. My amp is only 400w but i think they loud enough and quite good sound quality. The v2 is quite good, my advice is just to listen to the R, the focal and the mb quart and decide which one you like. I also put a stinger hi/lo signal converter and stinger ground filter because of the hissing noise

sitta... all DIY? nice one mate! what next?
Yup all DIY stuff. Next will be some performance products from Jtune after they release it, definetely the exhaust is coming first, i want louder noise . visually maybe a carbon bonet as soon as i can find one