Just collected my car last night after upgrading the sound system. Total damage RM13K+. Overall quite pleased with the sound quality especially the stereo image, front stage and clarity of the sound. Really pickup the little details not heard before. My only comment is the mid tone is a little bright maybe because the speakers are still new and stiff. Will let them gradually break-in and see whether the sound will soften after a month or two.

Head Unit:  Retain Stock Unit
DSP & AMP:  Helix P Six DSP
Front:  Ground Zero (3-way active)
Sub: Nakamichi Under-seat Active Sub
Sound Proofing:  4 Doors

Thanks Bro!! Noted that you are also a good installer and tuner, probably would have engaged you if I lived in KL.