I got a pair of the brainwavz r1 without mic from mp4nation during the initial launch when they had them on offer. TBH, they were pretty good for the price. It feels like a pair of wider brainwavz m2 with a tweeter, maybe slightly less bass. The bass is perhaps somewhere around the region of a low frequency focused triple/quad ba iem.
During the black friday sales in nov, I got another pair of the r1 from mp4nation, only this time with mic. First off, the mic cable is really really short, it rest around my jaw bone joint area. The biggest suprise is that the sound signature is totally different from the first pair. This pair has a wider soundstage, perhaps almost entering tf10 territory. However, the bass is overpowering. It is too much for me. It get boomy at times too. Mid is similar to the first pair, but is overpowered by the bass on occasion. With certain tracks, it seems to have less clarity than the first pair.
The first pair w/o mic has slight driver flex on the left side, the seond pair with mic has SEVERE driver flex on the right side.
I am actually quite suprised at the drastic difference and QC. Anyone experienced the same thing?