The Diamond J (passive) and Diamond P they had a couple of years ago were killer basses (I love Schecter and think they are under-rated). I wonder how the new J-4 sounds compared to the old Diamond J. Maybe the same electronics (they both have 2 band EQs, passive, with push/pull volume) but the PUs are noticeably different. The old Diamond J used to have 4 large poles whereby the new one has 4 double small poles...
The Diamond P was/is one of the best passive bass I ever played sound-wise, used to retail for some $350.00 and come in a beautiful blue color. A bit on the heavy side though.
Today, I play a Omen Extreme 4, gorgeous bass, very light and great sounding. Highly recommend Schecter!