AMT WH-1B is an optical version of a classic Bass guitar "WAH-WAH" effect with bandpass filter range selection (3-way switch). Optical frequency control increases the service life of the effect eliminating frequent replacements of maintenance and replacement of the control potentiometer.

AMT WH-1B features low noise and expanded frequency tuning range due to the use of original JFET-based circuit design. AMT WH-1B boasts great versatile sound and processes both clean guitar sound and Ultra high gain overdrive equally well.

AMT WH-1B features:

• 100% analog WAH-WAH effect;


• Fixed switching among bandpass filter ranges: 0.22-2kHz, 0.15-1kHz, 0.1-0.6kHz;


• True bypass;


• Fixed effect selection by pressing the movable front end part of the pedal;


• Removable support feet (the option is useful when you install the AMT WH-1B on the pedal board);


• Effect monitoring by using blue LEDs on both pedal sides (visible engaged AMT WH-1B mode);


• AMT WH-1B’s steel heavy body is stable and confidently responds to foot control;


• Adjustable pedal movement by means of an axial screw;


• Powered by DC adapter or 9-12V 9V battery;


• Low power consumption;


• Small size: 110mm x 62mm x 58mm (fits easily into your guitar case);


• Weight (without battery) 0.45 kg.