I bought a TH500 on a whim a couple weeks ago when I was out looking for a Markbass Big Bang and couldn't find one locally. This is a great head, but I really want the Big Bang more. It hasn't left my studio and has maybe a hour or two playing time on it. I am willing to trade this mint/brand new head, in original packing, straight up for a Big Bang. Must be in excellent condition also and definitely must have the headphone issue working correctly (i.e. no distortion). I can post pictures if you wish but as I mentioned this is in MINT condition: not a mark on it. I don't post much on TB but have a 100% feedback rating on Fleebay (user id: vmala) over the last decade so no worries... Thanks for looking!