Features Power: 100W (tube)Tubes: four 12AX7 (preamp); one 12AX7, four EL34 (power amp)4 channels3 modes per channelSuper punchy super dynamic4 noise gates, one for each channel2 Master VolumesSimplified FX loopClean channel based on 6100"AFD" circuitResonance and presence retuned to Satriani specs Description Product Description Hey, if you wanna play guitar like Joe Satriani, the Marshall JVM410H Joe Satriani Edition tube amp head is a great place to start! Marshall built the JVM410H Joe Satriani Edition to Joe's exact tonal requirements. And he uses it on stage and in the studio. So that means plugging into the JVM410H Joe Satriani Edition is like plugging into Joe's personal amplifier - you may not play like him, but you'll have his tone on tap! This modified JVM410 replaces the stock reverb with four independent noise gates, features specially-voiced channels chosen by Satch himself, and has a more dynamic and open sound than a stock JVM410. Bottom line? If the Marshall JVM410H Joe Satriani Edition amp head is awesome for Satch, it's probably awesome for you too!