100V power specification for Japan. It can go up to 90W, not 25W or 35W. This is what I was told during regular maintenance: do not switch the wattage while the power is on. It is a function that easily puts a load on the unit, so it can cause malfunctions. Currently, if there are any abnormalities, I take it for maintenance, and it operates sufficiently. Highly recommended for those who feel that small vacuum tubes like el84 and 6v6 lack the core of the sound. I can't explain it well, but if you only have one head amp, this amp is very good. Main unit Power cable Footswitch (+ cable) As expected of Mesa's high-end model. Recently, I prefer other companies like Orange and Marshall, so I am selling it. Fully independent 3-channel configuration, offering Mesa Boogie's unprecedented super clean tone, and a GREEN CH with a warm, creamy clean tone reminiscent of MARK-I, and CH2 (Orange Ch) where you can enjoy tones from MARKII and MARKIII. It has an overdrive tone simulating MARKIV and an Extreme mode with a modern, deep distortion, offering tone variations that go beyond just 3 channels, truly a culmination model of Mesa Boogie amps! Number of channels: 3, Number of modes: 9 10W/45W/90W switch (output switching) Currently equipped with 6L6 vacuum tubes. (It is built to accommodate EL34 as well.) Head amp guitar one control mesa boogie kemper effector rockerverb celestion line6 hx effects stomp fender twin reverb ac30 vox matchless gibson hughes＆kettner marshall medium Please note that we cannot be held responsible for any damage during shipping.