Hello all sifus, currently Im new in ICE and I just went for a Focal 100 KRS and a Focal Ibus 2.1 sub.. Im currently using the Ibus to channel the power to my front speaker which is 55w.. Considering to add a good amp since the shop people told me my focal speaker can support up to 100w and 55w is not sufficient for it to perform nicely. After that I heard from other people that 55w is sufficient and wont make much different compare to an 100w amp. Im comfused right now as I wanted to change rear speaker too and shop people intro to change head unit too as it can make big differences in the music as for the 24bit and alot more clearer music when played, they proposed clarion multimedia head unit.. Im thinking if Im changing head unit and the amp really make no much differences i might as well use the head unit built in amp 50w for my rear and nonid for an additional amp cause it cost a bomb too! lol.. Feel wasted if I put another amp since the underseat sub got build in 2 channel 55w and the head unit 50w x 4.. For sifus info im driving myvi 1.5 SE.. How should I do?    Btw, they intro rainbow Ipaul amp or Infinity dont know what model forgot dy lol..