FENDER, the first name in electric bass and the one that started it all, now brings you combo amps that boast the best sound, look, performance, power and value in their class—the new Rumble series. It's your bass sound redefined. Your inspiration redefined.TougherBeefier cabinets, rugged vinyl covering, heavy-duty nickel corners, painted cassis, and industrial metal grill.LouderEach model (except Rumble 15) has more output power than original Rumble.Better SoundingYears of focus helped us develop improved circuitry and a better voiced pre-amp, borrowing from advancements with our PRO products. Improved cabinet designs handle power better without making noises found on other low priced amps.