The Tweed Deluxe (formerly known as the Aurora Dual Drive)! The boost side is the Northern Lights, which is a modified treble boost so it can be a treble, mid or full range boost. The drive side is based on the Tweed Drive, but has been adjusted to have a bit more headroom as well as some eq adjustments. There is also an order switch so than you can have the drive going into the boost for a more traditional volume boost for soloing, or running the boost into the Tweed Drive to push it into higher gain. This in my opinion is where the magic is.
All True North Pedals