Time to ring EsCo!...
It needs a re-tip. There's that unmistakable 'edgy buzz' most noticeable on vocals and piano. Some of it is probably set-up, which is a bit rough and ready at the moment, but the tell tale signs are there.
It's not too far gone though and I can tell that I'm going to like this cartridge. Looking at the little trace thing that's in the box there's much less of a treble lift than the other AT cartridges I've had (which isn't many TBH), just a touch of it right at the very top. Bass sounds very clean and detailed too, I'm going to enjoy this once it's sorted.