Dumble Overdrive Special Year1982 Serial Number0055ModelOverdrive SpecialNotesBlack seude covering. 100 watts with a rare 40/100 switch. 1x12'' Altec speaker. This amp was custom built for a major musical recording star and has been used on many top hits. Folders Amp Archives Dumble Overdrive SpecialOverdrive Special 1982 SN 0055 4Images Leave a Comment Cancel replyYou must be logged in to post a comment.