Taken from
www.bossarea.com
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 was changed somewhat around 1994. The main change was that the Toshiba TA7136AP opamp was replaced with the Mitsubishi M5223AL. 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 D in DS-1 soon ended up under the i in Distortion where it remains today.
Boss Guitar Effects Guide Book vol.11 (1995):
THE DS-1 provides a harder distortion effect for guitar and keyboard sounds.lnstead of toneless, fuzzy distortion, the DS-1 faithfully reproduces all the subtle nuances quiet to screaming loud. The onboard Tone Control allows you to tailor the overall sound to your liking.
Using the DS-1
Mild distortion: This setting gives you mild, mellow distortion. For best results, use your pickup closest to the neck. (Fig. 1: Tone 0, Level 4, Dist 4)
Hard distortion: For this setting your should use your bridge pickup. When the TONE level is raised, highs are strengthened and a powerful distortion effect results. Adjust the amp and guitar volume carefully to avoid excessive effect depth. (Fig. 2: Tone 4, Level 4, Dist 7)
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