I've played my jazz bass threw many heads. Mostly Mesa, SWR, and Ampeg (obviously what I can get my hands on threw Guitar Center). And I have yet to find a head that compliments an overall jazz tone. My favorite tone, and probably impossible to achieve, is Jaco's tone. I know he got a lot of his sound from dynamics and his genious touch. But there's got to be a head that in some way emulates that kind of wah sounding, middy like, big warm, straight up j-bass sound. Ampeg is too low, SWR is too punchy and grinding, and Mesa just sounds like a metal head. So does anyone have any suggestions? Keep the Jaco sound in mind. Please Please Please . I know this request is pretty difficult but there's some really knowlegeable people on this forum that should have some kind of answer. Thanks so much.