So today I pulled out a Rob Allen Deep 4 to spend some good fretless time with the BB2. This bass is strung with Status black nylon tapewounds and has a very nice piezo pickup/preamp. I confirmed my preference for dialing the BB2 horn to about 25% on. Sounded much more organic and like an upright. Haven't been playing this bass much for quite a while and forgot about the the Fdeck HPF Pre Series 3 I used to use at gigs. Wow, what a difference! Night and day. Tone was more clear and authentic. Dialed to cut at about 45Hz. Was thinking about selling this bass and moving to an EUB form factor. I dunno, the RA sounds really good! But if you're using a bass with a piezo through the BB2, be sure to try an HPF. Makes all the difference!