Korpa 
This awesome, super-compact 2-channel, 15-Watt bass amp has been designed to match the sonic needs of bass guitarists looking for great, classic tube-like sounds in a small package with a small price. It lends itself to a wide variety of applications in which you need to keep the size down without compromising on the quality. Our revolutionary VTC Virtual Tube Circuitry gives the BT108 truly tube-like sound. Rely on its powerful 20-Watt 8" speaker for deep bass without distortion, using a dedicated 4-band EQ for the ultimate in easy sound shaping. For those times when you need to keep it quiet, there is a separate headphone output.
