Behringer B-TRON III Auto Wah Envelope Filter Effects Pedal

Step into the groove of classic '70s funk with the Behringer B-Tron III Envelope Filter, a vintage-inspired effects pedal crafted for today’s musicians. Powered by a fully analog optical circuit, it delivers the smooth, expressive sweep of a classic auto-wah with exceptional touch sensitivity and response.

With three filter modes—low-pass, band-pass, and high-pass—you get a broad range of tonal options, from deep, vowel-like growls to shimmering, resonant highs. The Up and Down sweep directions let you dial in everything from punchy “wah” accents to lush, vocal-like filter movements.

Ideal for guitar, bass, and keyboards, the B-Tron III brings rich texture and dynamic motion to your sound. A Range switch offers added versatility, letting you tailor the effect to highlight deep lows or sparkling highs, making this pedal a powerful tool for creative tone shaping across any genre.

Features

• Vintage auto-wah envelope filter delivers iconic '70s funk tones
• All analog optical circuit ensures natural response and legendary sound
• Three filter types offer low band and high pass versatility
• Up and down modes create expressive wah and wow effects
• Versatile sensitivity control works seamlessly with guitar bass and keys
• Range switch lets you emphasize low vowels or high overtones
• True bypass design maintains ultimate signal integrity during performance
• Durable vintage-style housing built to withstand gigging and travel

Specifications 

General

• Type: Vintage Envelope Filter
• Circuit: All analog optical
• Bypass: True bypass

Controls

• Range Switch (Low/High)
• Filter Type (Low Pass, Band Pass, High Pass)
• Direction Mode (Up/Down)

Power

• Power Supply: 9V Battery or Behringer PSU-SB DC power supply (not included)