This is a very collectible 1959 Ampeg M-15 Big M 2-Channel 30-Watt 1x15" Guitar Combo made in its 1st year 1959. Its 1st ever Navy Random Flair Sparkle Blue Tolex is ultra rare & near perfect all over. This is a great jazz amp and has a nice warm tone. The amp is in fabulous condition for the pickiest collector. Both of the channels have a strong output and features a large 15" speaker for great bass response. The amps natural tone is very dark and perfect to plug in any electric guitar and get a fantastic jazz tone. Its original label is still intact. Truly a wonderful user friendly investment.