PacoTaco
500+ Head-Fier
Odd, I have a completely different sound signature with my Prime. Are you sure it wasn't faulty one?
The guy I sold it to loved it, so I assume no. The FR graphs released by several sites showed what I heard from it. It has more linearity in the bass and the same upper-mids drop off as the Mad Dog with a more dramatic spike into the 10kHz range. I'd put it on par with the Alpha Dog (which I think is too boring,) but it is not anywhere near the grand they were asking for it (or the marked down price they're selling it for now.)
They became too fatiguing to me. I kept them for around three weeks with heavy use, but I juat couldn't come to love them. Had a backwards burn-in honestly.