Here's what Nexi say about the Wah pedal:
The tone wizards at NEXI are committed to providing a unique analog vintage tone without compromise. The Wah WWA-01-UD is the classic pedal every guitarist needs for that true funky sound. When you need fat analog tones to funk up a tasty solo this is the Wah for you.
The Wah WWA-01-UD is reminiscent of those funky soulful analog tones from the 70s. The harmonically rich accents provided by the 100K ohm Hot Potz and the quick abrupt Wah sound will keep those riffs coming. Easy application of foot pressure will have you accenting those soulful tones like the best funk masters.
The creators at NEXI are all guitarists, with most having been on multiple tours and have even been awarded the Red Dot and iF Design Awards for their excellent product design. No one understands your needs better. The electronic board, together with the aluminium body is designed to be completely splash-proof to keep you wah, wah, wahing even through beverage spills.
All NEXI pedals are True Bypass, are hybrid designed, and all are tailor-made to plug‘n play to get that funky licks out faster than James Brown’s dance moves. This means the WWA-01-UD can be used standalone with a 9V battery, external power supply, or simply click it in NEXI’s revolutionary - The Solution - pedal board to get that party started.