Английская Википедия:Boss DS-1
Шаблон:Short description Шаблон:Infobox effects unit
The Boss DS-1 is a distortion pedal for guitar, manufactured by the Roland Corporation under the brand name Boss since 1978. The first distortion effects unit made by Boss,[1] it has become a classic effect, used by many notable guitar players.[2]
Boss released a successor, the DS-2.[3] The DS-2, "Turbo Distortion" was released in 1987, and is very similar to the DS-1 except that it features a "turbo" setting, which produces a sharper midrange tone.[4] Boss released a black limited edition 40th Anniversary model of the DS-1 in 2017.
Variations
DS-1 – Original pedal came out in 1978.
DS-1 BK – Limited edition 3000 units are made, exclusive for GuitarCenter store in 2016 year. Black body and orange fonts.[5]
DS-1-4A – Limited edition, for 40 years since original pedal made, 2017 year. Black body and gold fonts.[6]
DS-1W – WazaCraft version, 2023 year.[7]
DS-1-B50A – Orange metallic paint. To celebrate 50 years since Boss company been found. 7000 units, 2023 year.[8]
Circuit
The blueprint of the DS-1 circuit is simple, with a pair of in- and output buffers surrounding a transistor boost stage, an Operational Amplifier gain stage with hard clipping diodes, and a tone control.
It features the same JFET switching circuit as almost all other Boss effects units, allowing a simple momentary push button to reroute the signal, either bypassing the effect or engaging it. In either state, the signal will pass through the input and output buffer stage of the effect, and this is the key differentiating factor between Boss pedals and "true bypass" pedals. The buffers themselves are similar, both Common collector amplifiers with unity gain. They each feature a 2SC2240 Toshiba transistor, which is only special insofar as it is cheap and reliable.
The transistor boost stage consists of two highpass filters in series, followed by a Common emitter amplifier. This serves to remove unnecessary bass frequencies before the distortion stage, preventing the signal from accumulating muddiness as it is amplified.
The Operational Amplifier gain stage is the most important part of the Boss DS-1 circuit, featuring the clipping diodes, Op-Amps and further filters which refine and color the sound. The op-amp stage is the only part of the circuit which has undergone any real changes over the pedals history. Originally, in 1978, the circuit was built around the Toshiba TA7136AP pre-amplifier, not an op-amp, and this gave the effect more of a warm, rich sound. In 1994, the Toshiba pre-amps were nearing the end of their stock life, and so the circuit had to be modified in order to play host to an easier to find dual op amp, the Rohm BA728N. This version is slightly quieter than the original, but is otherwise essentially the same. The Rohm op-amp was replaced in 2000 by the Mitsubishi M5223AL op-amp, which remains the centerpiece of the circuit to this day.[9]
Last but not least, the humble "big muff pi" style tone control immediately preceding the output buffer is a fixed cutoff lowpass filter and a fixed cuttoff highpass filter which attenuate either the low or high end, depending on the position of the potentiometer. The way the two filters are interconnected creates a notch, or scoop, around 500Hz when the potentiometer is in the center position.[10]
Notable users
- Bruce Kulick
- Chuck Schuldiner
- Dave Grohl
- Dave Navarro
- Doug Aldrich
- Gary Moore
- George Lynch
- Joe Satriani[2]
- John Frusciante
- Kurt Cobain[11][12]
- Mark Speer[13]
- Matthias Jabs
- Mike Stern[14]
- Ola Englund
- Peter Steele
- Steve Rothery[15]
- Steve Vai
References
- ↑ Шаблон:Cite book
- ↑ 2,0 2,1 Шаблон:Cite book
- ↑ Шаблон:Cite book
- ↑ Music Trades, Volume 136, Issues 1-6, pages 73 & 91
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite book
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
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