The Euphoria is Brian Wampler's take on the creamy yet crunchy feel of Dumble-style amplifiers, and one of his classic overdrive circuits. Its centre is a three-way switch between independent gain stages. Smooth is the warm, rounded D-style voice with strong sustain. Open adds grit with very little colouring of your tone. Crunch is the most aggressive of the three and edges toward fuzz with the bass turned up.
Gain, Volume, Bass and Treble cover the rest. The Bass control sits ahead of the gain stage, so it changes how the low end drives the circuit as well as how much of it you hear. Wampler designed it to stack in either direction, into another drive or after one, and it switches with relay true bypass.
It suits a player who wants one drive that moves from light breakup to heavy crunch on a clean amp. Built in the USA.
SPECIFICATIONS
CONTROLS
4 knobs: Volume / Gain / Bass / Treble
Mode switch: Smooth, Open, Crunch
FEATURES
3 independent switchable gain stages
Bypass: Relay True Bypass
CONNECTIONS
Top mounted input and output jacks
POWER
Battery connection and 9v power jack
Power draw: between 8mA (9v) and 15mA (18v)
LED will flash 3 times when power from battery is getting low
DIMENSIONS
2.5" x 4.5" x 1.5" (63.5mm x 114.3mm x 38.1mm), height excludes knobs and switches



