The IBZ10B features a closed-back cabinet and 6.5" Power Jam speaker for a solid, authentic bass tone. The 3-band EQ offers access to a variety of sounds, and the amp also comes with an auxiliary input, making it an ideal practice amp. Features output : 10W@4Ω speaker : 6.5" Speaker controls : Bass, Middle, Treble, Volume i/o's : Bass Input, Aux Input, Headphones Out cabinet : Closed back size (mm) : 255mm(W) x 1/4"m(D) x 300mm(H) weight : 3.4 kg