Retro Gear Shop is a high-end boutique store located in Nashville, Tennessee. AMR Peavey Tube Sweetener For sale is a rare AMR Peavy Tube Sweetener. In great shape, from long time owner lightly used in smoke free home studio. It appears to be functional but we couldn’t hear much effect in the Sugar control. Spice and Level seem to work as it should. This is the only one we have owned so not positive if it’s operating properly or not. Check out the pictures to make sure you like it.