These beauties were available over here in England a while back as the highest guitar in the regular RG line - ie a "non-prestige" instrument.
Whilst the pickups aren't actually Dimarzios they're very good quality for stock units
And, to my ears sound fine, not quite as good as the DiMarzios I replaced them with but not far off.
Don't worry at all, you are getting a great guitar!!! Maybe post us some pictures when it arrives?
