Synergy OS DUAL CHANNEL ALL-TUBE MODULENo two Dumbles are the same, but its the Dumble Overdrive Special that continues to reign as the mans pinnacle design. The amplifiers boast a unique sound and feel that is praised for its ability to enhance and uncover every nuance of a players technique and tone. It is this ability that has earned the amp a reputation for being one of the finest and most revered ever made. Because these mythical amps are extremely hard to come by, we created the