Weighing only 9.26 lbs., this little box (approx 8.8” cube) sports one 6” neodymium speaker and an optional “satellite” tweeter that can be stuck to the side or top of the combo with the tweeter’s Velcro base. The aux input allows you to play along with a CD or MP3 player, the headphone jack allows you to practice quietly, and the XLR output allows you to use the amp for recording. The Micromark has the same sound as other Markbass amps, only not as loud! It stunned all those who tired it at the NAMM show. It definitely sets a new standard in sound quality for practice amps!