The Fender Rumble 15 is a 15w practise bass amplifier with a powerful 8" speaker.
Small black box; big bass sound. That’s what you get from the baby of the family, the Rumble™ 15, covered in tough black vinyl and shaking the walls with 15 watts of strong, clear Fender® bass sound through an 8” Fender Special Design Speaker. Great sound and easy portability at an unbeatable value.