Blackstar Series One S1-100 MKII Guitar Amplifier Head 100w Valve Amp

Product Information

Series One was first shown at Frankfurt Messe 2007 when the company was launched. It has always been our flagship high gain amp line and is the most awarded lines we’ve ever released. Featuring two patents, (ISF and DPR), the Series One has been a dominant force in the rock and metal scene for nearly two decades, used by some of the biggest artists in the world.

Driven by a commitment to sonic perfection, we’ve used everything we’ve learned about amp design in the last 19 years to elevate this iconic platform even further.

Enter Series One MK II; a refined and streamlined range designed as the ultimate modern flagship amplifier and cabinet, tailored specifically for the needs of today’s 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 stage—a high-gain powerhouse engineered for crushingly tight rhythm tones and thick saturated leads, devoid of 
the unwanted fizz often present in other designs.

This juggernaut of an amplifier boasts over 30 circuit modifications and voicing tweaks from its predecessor, resulting in what we confidently assert to be the zenith of high-gain amplification for metal guitarists today.

The Series One 412 PRO A/B MK II cabinets, ideal companions to this sonic weapon, feature custom-voiced Celestion Vintage 30 speakers exclusive to Blackstar and a special baffle construction for a more balanced mid-range response.

Combined with these sonic enhancements, we’ve also overhauled the cosmetic so that the 
Series One MK II emerges with a more assertive, rugged, and contemporary look that commands attention on stages of any size.

It’s not all about looks and sounds though as this range is constructed from nothing but the finest materials including finger-jointed birch ply cabinets, seam welded 1.6mm steel chassis for tank-like strength and robust metal grille plates. These amplifiers are engineered to endure a lifetime of intense use and abuse on the road.

The Series One MK II is the pinnacle of our commitment to innovation in delivering the ultimate tools for self-expression. Our heritage is deeply rooted in pushing the boundaries of sound design and a future driven by a dedication to perfection. This amplifier sets a new standard for metal guitarists that are seeking uncompromising performance, quality, and faultless reliability with an amp that will deliver night after night, stage after stage, city after city. 

Here’s what more you can expect from the new Series One MK II

• Best in class tight, focussed, clear and defined high gain channels.
• MIDI enabled to easily integrate into pro rigs.
• Blackstar’s patented ISF (Infinite Shape Feature) on all channels. Unique to Blackstar products, this control can take you from a more ‘American’ sounding amp all the way through to a classic ‘British’ amplifier and anywhere in-between.
• Blackstar’s patented DPR (Dynamic Power Reduction) allows continuously variable power reduction down to 10 Watts, so you can use your valve amp in any playing situation and achieve pure valve output distortion and compression at any volume. DPR is a unique ‘dynamic’ circuit, delivering the exact compression (a.k.a. sag) of a small overdriven valve amp, at any volume level. The power is reduced – the feel, tone and reliability of the amplifier is maintained.
• 6 modes across 4 channels (Clean Warm, Clean Bright, Crunch, Super Crunch, OD1, OD2)
• All channels footswitchable via the included 4 way footswitch.
• The chassis of all Series One amps are made out of seam welded 1.6mm steel for tank-like strength.
• All power-dissipating components are de-rated significantly to extend their lifetime and increase reliability.
• The Series One 100 MK II has plated-through double-sided PCBs for increased mechanical integrity. The anodes of all the output valves are handwired and sleeved with neoprene.