Series One MK II
The New #1
Series One MK II is the ultimate professional high gain valve guitar amp. In the studio or on the road, our Series One MK II valve amps will always deliver. Whether it’s build quality or tonal excellence, no compromises have been made – if you are looking for the ultimate, professional high gain valve amplifier, why compromise? We didn’t.
Dual Patent Design
At the heart of the Series One MK II’s design are two patented circuits: the ISF (Infinite Shape Feature) tone control and the DPR (Dynamic Power Reduction) system.
Exclusive to Blackstar Amplification, these innovations stem from extensive technical research. With ISF and DPR, you can customise the Series One MK II’s sound palette to match your unique signature sound and create ‘the sound in your head.’
Better by Design
The Series One MK II is built for unbeatable tone and reliability, with over 30 circuit and voicing mods developed over years of refinement from the original amp.
Designed for the rigors of touring, Series One MK II amps feature double-sided PCBs, seam-welded 1.6mm steel chassis, and birch ply cabinets. Heavy-duty mains and output transformers, made from top-grade, grain-oriented steel, ensure robust performance on the road.
DPR (Dynamic Power Reduction)
DPR allows continuously variable power reduction 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 '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.
ISF (Infinite Shape Feature)
The ISF control allows you to infinitely adjust the response of the tone control network between any of the traditional voicings in a way that has never before been possible. The whole tone stack response (i.e. Bass, Middle and Treble) is moved yet the tone controls remain fully interactive, just like in a regular tone stack.
The ISF control is continuously variable between all the traditional responses allowing you to effectively design your own sound.
Built to Last
Constructed from premium grade materials and using traditional methods, Series One MK II amplifiers are designed to last a lifetime.
Every aspect of a Series One guitar amplifier is designed to deliver not only the ultimate tonal performance, but also reliability capable of withstanding the rigours of life on the road.
Celestion Vintage 30's
The Series One PRO 412B MK II cabinets feature industry standard Celestion Vintage 30 speakers ensuring the amp delivers a perfectly balanced mid-range response with superior articulation and power.
