The Gedi

Probably an earth loop betwen the amp and the Mac via the interface, seen it before, if you lift the earth on the amp or use a di box to isolate it the noise will disapear!

Ged Green didn't reply because he never received the request but hey ho! The problem is that the Music Man necks are not totally sealed as on a neck that is sealed with lacquer, the oil that is used doesnt fill the pores of the wood so it leaves minute hollows that fill with everyday grime and general dna from your hands. The only way to clean them is to add more oil or a solvent to try to float the grime out of the pores - oils would be - linseed oil, tung oil, Danish oil etc. - solvents would be turps or white spirit. If you take the spirit route make sure you dry it out thoroughly and add new oil after cleaning. I wouldn't put any water based products near the wood - soap etc. -Sugar soap as used by decorators might be ok but I would wipe it off and dry it pretty quick - you don't want moisture getting into the wood. I wouldn'y use any sandpaper as someone has suggested - it is better to use OOOO wire wool - that's four noughts wire wool as used by French polishers - it's very fine and wont damage the fibres of the wood, it will also polish up your frets at the same time. the wire wool can be used for applying the solvent and/or the new oil finish, when it dries give it a polish with a clean cloth. I hope the above is of use. Ged