The Crate BX B10 Amplifier is a great amp. The amp is contained of 10 watts. The Crate amplifier has speakers of 18′.The Crate MX B10 is great for a beginning amp for a bass player. This amp is a lightweight amplifier which weighs 14 Lbs. The dimensions of the amplifier is 8.5x12x14. The Crate amp is used but it is in good condition and fully functional.