Boss TW-1 T Wah
The T stands for “Touch” and the early TW-1’s actually had the text Touch Wah written on them instead of T Wah. The TW-1 was replaced by the AW-2 in 1991. Together with the CS-1, the TW-1 is the only pedal to have a toggle switch. With only 2 controls, the TW-1 is very easy to control. The later autowah pedals have the added versatility of modulation but for the basic wah sound the TW-1 does the job without forcing the user to read the manual.
Version Differences
- The earliest TW-1s was labelled Touch Wah instead of T Wah
- There were both silver screw and black screw versions made
- The T in TW-1 was first placed under the W in T Wah but later moved under the a
- TW-1A
- Serial: 7300 – 9000
- Marking of PCB: 052-287A
- Switch: Up to 8500 transparency, from 8600 black
- Silver screw
- OP-AMP: RC3403A
- Momentary LED
- TW-1B
- Serial 9100-0300
- Marking of PCB: 052-287B
- Switch: Black
- Silver screw
- OP-AMP: RC3403A
- Permanent LED
- TW-1C
- Serial 0400-
- Marking of PCB: ET5206-510B
- Switch: Black
- Black screw
- OP-AMP: 2x uPC4558C or JRC4558D
- Permanent LED
Specifications
- Controls: Sens, Peak, 2-way Drive switch
- Connectors: Input, Output, AC Adaptor
- Current Draw: 6 mA (DC 9V)
- Recommended AC Adaptor: ACA Series
Labels
- Black – Made In Japan
The TW-1 was sold from July 1978 to May 1987.
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