The presence and projection of a fully cranked Marshall Stack is an unforgettable experience - even when it comes in miniature form!For those who crave this tonal and visual experience in a pocket-sized package, here is the MS-4 Micro Stack. Featuring control Gain, Volumes and Tone, this 9 volt battery or mains powered stack has all the excellent sound quality of its baby brother, the MS-2, but stands at 25cm tall, 11cm wide and 6cm deep.