The Rockburn Bass Amp has a 15 Watt RMS output with a 6.5; bass speaker. Controls include volume (Master), High/High-Mid/Low-Mid/Low. Use the headphone socket for quiet practice and the carry handle for transportation. Dimensions : (w) 305mm x (h) 315mm x (d) 185mm; weight: 5.6kg. Size H37, W32, D21cm. Weight 5.8kg.