Where innovation meets tone
At Blackstar we believe that guitar amplier design is not voodoo or a black art – it is the application
of engineering discipline in a musical setting. The real magic happens when we are able to provide you,
the musician, with products that inspire you in your art. This philosophy drives us to truly understand the
science of great guitar tone and deliver products that really deliver ‘the sound in your head’.
We create every product at Blackstar ‘from the ground up’ as opposed to simply tweaking the old
classic designs. Each Blackstar circuit contains numerous incremental innovations, in addition to
unique breakthrough technologies such as ISF and DPR. It is often these small, yet important
enhancements that give Blackstar products their characteristic sound clarity and exibility.
These sonic innovations are only available on Blackstar products.
Put simply – ‘Blackstar amps sound different because they are different!’
Dual Patent Design
At our HQ in Northampton, England we have an ongoing
program of research and development which seeks to
constantly challenge the state-of-the-art in guitar amplier
technology. We believe it is our dedication to research
and innovation that sets us, and our products, apart.
Patent-applied-for innovations like ISF and DPR are
the foundations of the Blackstar product catalogue
and our commitment to helping guitarists achieve
the sound in their heads.
Dynamic Power Reduction (DPR)
Everyone knows that valve ampliers sound best when they
are turned up loud. This is because at higher volume levels
the output valves introduce musical distortion and
compression which are a vital part of the valve
amplier experience.
Blackstar’s patent-applied-for DPR feature controls the
output power level by dynamically adjusting the output
stage voltages, allowing power valve distortion and
compression at any volume level.
Benets of the DPR control:
1. DPR allows continuously variable power reduction, down to
10%, so you can use your valve amp in any playing situation.
2. DPR is a ‘dynamic’ circuit, delivering the exact compression
(a.k.a. sag) of a small overdriven valve amp, at any volume level.
3. Unlike power attenuators, DPR places nothing between the
output of the amplier and the loudspeaker and hence as the
power is reduced the feel, tone and reliability of the amplier
is maintained.
4. DPR’s dynamic power reduction is only available on
Blackstar products.
Innite Shape Feature (ISF)
The conventional three way guitar EQ network, or tone stack
(a.k.a. Bass, Middle and Treble), is a key to the characteristic
‘voice’ of traditional guitar ampliers. Classic amplier designs
have their own versions of this network which leads to their
own tonal voicings.
The ISF control allows you to innitely adjust the response
of the tone control network between any of the traditional
voicings in a way that has never before been possible. In
this way you can design your own sound and truly nd
‘the sound in your head’.
Benets of the ISF control:
1. ISF is a passive circuit giving a musical response that is not
found in active parametric or ‘contour’ controls.
2. The whole tone stack response (i.e. Bass, Middle and Treble)
is moved.
3. The tone controls remain fully interactive, just like in a regular
tone stack.
4. The ISF control is continuously variable between all the traditional
responses allowing you to effectively design your own sound.
5. ISF and ‘the sound in your head’ are only available on
Blackstar products.
USA to UK in seconds
USA UK
Ian Robinson (Managing Director) in the Blackstar lab
Blackstar Cataologue 2011 A5.indd 6-7 16/03/2011 14:29
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