1983 Music Man 100-B Bass Amplifier Head. This vintage amp head is in very good condition overall. The serial number is “DR00353″ and it has a 1983 date sticker on the back. The exterior has some general wear but no major issues. The fuse has been replaced and I think it may have new tubes also. It has been fully tested and is in excellent working condition. There will be no exceptions to this! You will also be permanently blocked from purchasing my items in the future. Offers & Package Deals. Please note that I do not consider offers! I will not end any listing early so please do not ask! I will not respond to any questions asking for any of the above! I have blocked P. Boxes from this listing. Please note that you or someone at your address will have to sign for this guitar. So please plan ahead so you receive your item.