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Boss OD-1 Over Drive

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Boss OD-1 Over Drive

The OD-1 is by now legendary. Artist of the 70’s was mostly using a fuzz distortion sound and the overdrive produced by the OD-1 was not typical. It was however soon accepted as the new standard of guitar sound. The OD-1 features an asymmetric circuit where the positive and negative halves of the waveform isn’t distorted equally. The sound is therefore still close to the original even though distortion have been added.

Version differences 

The OD-1 has gone through a number of changes since its conseption. The different versions have been named OD-1A, OD-1B and so on. The version letter is printed on the PCB in the form of the number 052-281A to 052-281E. There are at least 4 different versions available. Each with minor differences like opamps from different manufacturers. The 4 digit serial number is ink stamped inside the battery compartment. These numbers are not real serial numbers but instead batch numbers. It is so far unknown how many pedals there were in a batch. The section below lists the major differences between different versions of the OD-1.

Boss OD-1 Over Drive

Specifications

  • Controls: Level, Overdrive
  • Connectors: Input, Output, AC Adaptor
  • Current Draw: 3.5 mA (DC 9V)
  • Weight: 400g.
  • Input Impedance: 220kOhm
  • Output Impedance: Over 600Ohm
  • Signal/Noise Ratio: 80dB
  • Recommended AC Adaptor: ACA Series

Labels

  • Black – Made In Japan

The OD-1 was sold from November 1977 to July 1985.

Boss CE-1 Chorus Ensemble

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Boss CE-1 Chorus Ensemble

Released June 1976, the CE-1 was the first in what has proven to be a very successful line of Chorus pedals from Boss. The circuit had already been used in the now legendary Roland JC-120 Jazz Chorus amplifier. Boss decided that it would be a great idea to take the chorus circuit out of the JC-120 and sell it as a separate unit. The result became the CE-1 Chorus Ensemble.

The CE-1 is based around the Matsushita BBD MN3002. This circuit is originally developed by Philips but Matsushita was given a licence to make it from the mid 70s. Roland/Boss was their first customer and they soon found many applications for it in a wide range of products.

Boss CE-1 Chorus Ensemble

The CE-1 is an AC powered stereo chorus with a built in vibrato function. Just as on the JC-120 you can choose whether to use the CE-1 in chorus or vibrato mode. They both use the same BBD circuit so it is impossible to use both at the same time. The chorus and vibrato has separate controls. This differs from the JC-120 where the same controls are used for both effects.

DS-1 Distortion

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DS-1 Distortion

This is truly a classic distortion pedal. It produces a distortion sound with a hard edge and is known to have a very low noise level compared to other distortion pedals. Many people swear that the older “Made in Japan” models sounds better than the newer “Made in Taiwan” models. The DS-1 has over the years been used by a lot of great guitar players. Steve Vai and Joe Satriani are two players who has voiced their praise over this pedal. The DS-1 is also a favorite among modifiers. Keeley, Analogman and Stinkfoot all provide their own versions of this icon among distortion makers.

Version differences

The design of the DS-1 has changed significantly twice throughout its lifetime. First time was around 1994 when the Toshiba TA7136AP opamp was replaced with the Rohm BA728N. In 2000 the opamp was again changed. This time it was replaced with the Mitsubishi M5223AL. Regardless of the circuit changes, the DS-1 sounds just like it did when first released back in 1978.

DS-1 Distortion

The DS-1 has also gone through a number of cosmetical changes. The earliest version had a clear switch, silver thumb screw and the D in DS-1 placed directly underneat the t in Distortion. The clear switch disappeared around serial number 8700, the silver thumb screw at serial number 0500 while the D in DS-1 ended up under the i in Distortion around serial number 13xx00.

Specifications

  • Controls: Tone, Level, Dist
  • Connectors: Input, Output, AC Adaptor
  • Current Draw: 4 mA (DC 9V)
  • Weight: 400 g (15 oz.)
  • Nominal Input Level: -20dBu
  • Input Impedance: 470kOhm
  • Nominal Output Level: -20dBu
  • Output Impedance: 1kohm
  • Recommended AC Adaptor: ACA or PSA Series (depending on production year)

Labels

  • Black – Made In Japan
  • Silver – Made In Taiwan

The DS-1 was sold from June 1978 to present.

Boss DF-2 SUPER Feedbacker & Distortion

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Boss DF-2 SUPER Feedbacker & Distortion

The DF-2 is a distortion pedal with the added option of holding down the footswitch for endless sustain – in overtone harmonic form of single notes. With the overtone dial you adjust the overtone that you want to feed back. When you step on the pedal and hold it down, it feeds the note back until you release the pedal. This way you don’t need to play at full volume to get a feedback sound. The feedbacked note will stop immediately when you release the pedal. There is unfortunately not way to get a smooth trailing off.

Version differences

  • The first DF-2s was labeled “Super Distortion & Feedbacker” while the later ones was called “Super Feedbacker & Distortion”. DiMarzio had already registered the name “Super Distortion” so Boss was forced changed the DF-2’s name. The change took place around serial number 500000 (January 1985). Production moved to Taiwan late 1989 and was modified for the PSA adapter from early 1991.
Boss DF-2 SUPER Feedbacker & Distortion

Specifications

  • Controls: Level, Tone, Distortion, Overtone
  • Connectors: Input, Output, AC Adaptor
  • Current Draw: 10 mA (DC 9V)
  • Weight: 450 g (0.99 lb.)
  • Input Impedance: 1 Mohm
  • Recommended Load Impedance: 10kOhm or greater
  • Recommended AC Adaptor: ACA Series (black label) or PSA Series (silver label)

Labels

  • Black – Made In Japan
  • Black – Made In Taiwan
  • Silver – Made In Taiwan

The DF-2 was sold from September 1984 to April 1994.

Collection

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