I like John Paul Jones' sound in Zeppelin. Right now I use a fender bassman 100 combo amp and it is very good to practice with but live it sucks. I looked into one of those acoustic b600h or trying to find a vintage head but people have said different things about them that i do not like i.e. like blowing up in 2 weeks or not having enough high or mids which i think takes the dynamics of sound out of an instrument. So I noticed that he also used gallien-kruegers and swr so I looked into both of those and ... if you have a lot of money swr is the thing but I do not. I have tried out a gallien-krueger preamp before and it sounds like the sound i want so i am looking at either the 400rb-iv head or the 800rb head. Now it is the cabinet can anybody help with this situation to get a nice John Paul jones type of sound with those head or another combination.