From Blackstar:

“The Series One MK II is a refined and streamlined range designed as the ultimate modern flagship amplifier and cabinet, tailored specifically for the needs of todays metal guitarists. This evolution of the range marks a significant leap forward in high gain, high performance amplification, with the 4 channel Series One 100 MK II taking centre stagea high-gain powerhouse engineered for crushingly tight rhythm tones and thick saturated leads, devoid of the unwanted fizz often present in other designs.”

• 100 Watt valve head
• Dual Patent Design
• Patented Infinite Shape Feature (ISF)
• Patented Dynamic Power Reduction (DPR)
• 4x ECC83, 1x ECC82 & 4x 6L6 valves
• Four footswitchable channels
• Best in class high gain Overdrive channels
• Clean channel with Warm (Plexi) and Bright (Class A) type modes
• Crunch channel with Crunch and Super Crunch modes
• Master Resonance, Presence and Volume
• MIDI switching
• Series effects loop with effects level switch
• Speaker emulated output
• 1.6mm seam welded steel chassis
• Birch ply cabinet

Brand new condition, comes with footswitch.