The ingenious digital modelling and effects engine from Fender's Mustang GT guitar amplifier line has been adapted to Fender's Rumble bass amp line, and the results are outstanding. Loaded with 15 different amp models based on classic Fender designs as well as designs by other manufacturers, a vast array of effects, and a infinitely adjustable signal chain. The Rumble Stage 40 packs 40 watts into a 10" woofer and defeatable compression horn.