Hand-built 50-Watt guitar head driven by 4 x 12AX7 and 2 x EL34 tubes. Authentic 2-channel preamp design—everything from traditional clean/crunch to modern high-gain sounds. Revolutionary INFINIUM Tube Life Multiplier technology: Extends the life of your amplifier’s expensive power tubes up to 20 times. Provides incredible reliability and consistent tone over the complete lifespan of your tubes. No need for expensive matched tube sets. Allows you to mix and match any combination of compatible tubes types and brands. Monitors performance of each power tube continuously and displays defective tubes to allow for easy and individual replacement. Switchable Class-A/AB operation for ultimate power amp voicing: Class-A for classic warmth and Class-AB for raw, high-speed power. Integrated high-definition reverb with dedicated Reverb control. Heavy-duty footswitch for Channel and Reverb function included. Vintage Equalizer section with dedicated Bass, Mid and Treble controls. Phat switch to boost the sound character of your guitar playing. Speaker-emulated output with 1 x 12 or 4 x 12 voicing option Impedance switch (4, 8 and 16 Ohms) to match virtually any speaker cabinet