From Fender:

“The all-new Rumble Series is a mighty leap forward in the evolution of portable bass amps.

Re-engineered from the ground up, new Rumble amps are lighter and louder than ever, with even more power and a classic Fender vibe. A newly developed foot-switchable overdrive circuit and versatile three-button voicing palette deliver powerful tones ideal for any gig. Additional upgrades include Eminence drivers and premium HF compression tweeters.”

• 500 watts
• Dual 10″ Eminence speakers
• Compression horn with on/off switch
• Compact and lightweight (36.5 pounds) ported plywood enclosure with removable grille
• Overdrive circuit (controlled manually or with optional footswitch)
• Three-button voicing section (bright, contour, vintage)
• XLR line out with ground lift