Compass Box Transistor is a Blended Scotch Whisky that was specially created by Compass Box in collaboration with Brewdog Distilling Co. for their Boilermaker Series. The blended whisky pairs up with Brewdog’s Punk IPA beer in an old-school Boilermaker cocktail. Compass Box Transistor matured in a combination of first-Fill American oak barrels and French oak casks. It was bottled in 2019 at 43% ABV. Only 5658 bottles have been released.