Sounds fantastic with DR Sunbeams on there. I suspected, and Tribe confirmed, that the detents in the eq knobs are designed for you to dial in the tone with the eq knobs centered and then use them as needed to cut and boost bass/treble from there. It sounds fine with the eq knobs all the way down, but they're good for dialing in the center (both pickups on) position. If you have a good Jazz bass, it's probably unessential since it covers familiar tonal ground. With everything zero'd out, I think it has better neck only and bridge only tones than my MJ4, but not as good with both pickups on. But obviously the eq is there for a reason on both bases so... 
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