Up for sale, a 1981 Boss T Wah TW-1 effects pedal in excellent condition and in perfect working order. Produced from 1978-1987, the T Wah was Boss’ first compact filter effect, and this particular iteration is an early production example with smaller font and “Made in Japan” black foil label.
The T Wah applies an automatic wah effect to the signal, with a dynamics sensitive response. The more you dig in, the more the effect is applied, while the Sens (Sensitivity) knob determines the trigger threshold. The Peak knob controls the tone, and the Drive switch toggles between Up or Down settings, essentially mimicking the motion of sweeping up or down on a standard tilt-based wah pedal.
This early T Wah is quite clean with only a few scuffs and dings on the enclosure edges. The original knobs are intact, along with the black foil “Made in Japan” label, and the serialized sticker in the battery compartment, dating production to May, 1981.