UI pulled the complete preamp I have out of a 2002 Warwick Thumb Bolt On 5 string that I own. Then, I bought the pot that has the battery clip on it (I can't remember what that knob does, it's been too long since I've had this pre in the bass) from a fellow tb'er. The complete harness has the extra pot I bought connected to it. The seperate pot that I have was originally part of the preamp. I did that because my bass started eating batteries at an alarming rate, and it was making lots of static/fuzzy sounds, cutting in and out, and sucking tone pretty bad. I never did string up the bass and play it after I started to fix up this preamp. However, I did buy some new pickups for the bass, and I hooked em up to this preamp to see if it all would work together in the bass, and it did, with absolutely no problem. I do believe this preamp in it's current condition to be 100% reliably functional. I didn't actually play the bass, I just hooked up the pickups to the preamp, then plugged my bass into my amp to check for noise, and to test all the knobs. Both pickups had signal, were dead quiet, and all the knobs on the preamp were responsive while also being dead quiet. At that point I should've been able to string up the bass and play it. However, I decided to take things a step further, because this bass is going to become my new main gig bass. I went ahead and bought a brand new preamp that matches my brand new pickups. That way I had the peace of mind of knowing that everything was brand new and it shouldn't ever give me any trouble. So, that's the story behind all these parts. I didn't reuse the battery box, I didn't feel like I needed it. It's really just in the way. So since the preamp works, I'm going to sell it as a working unit. I'm not going to guarantee it to work or offer a refund. I will offer it at a good price. $60 shipped and paypal conus. The extra pot that I have, I can neither confirm nor deny that it works. If it does work, it's a good deal. If it doesn't work, it's worth having for parts. $25 shipped and paypal conus. The battery box is a freebie. If you buy one or both of the other parts for sale, and you want the battery box, I'll throw it in. I will not just send you the box for free if you aren't buying something else from me though. I would be open to trading for a set of DR nickel loriders, in a 5 string set 45-130, or possibly some GHS pressure wounds in a 5 string set of the same gauge. I may also look at 3" or wider high quality straps. UPDATE ON THE TRADE INTERESTS- black knobs for solid shaft pots the new Vintage Trouble album the new Beware the Darkness album black 2+2 hipshot ultralites black gotoh style bridge 4 string DR Black Beauties .045-.105 pedals (anything, try me) .22lr ammo 12ga ammo .270 WIN ammo if you're local to SWMO, I would be interested in trading for farm supplies. I really need t posts, gates, could ALWAYS use feed lol horse halter (medium, large) horse tack 110v mig welder hunting gear compound bow automotive tools/equipment I would also entertain trades for farm animals, no pets, again, if you're local If you have a trade that I haven't listed here, throw it at me. Thanks!!