The Behringer B-TRON III Envelope Filter is a faithful recreation of the iconic auto-wah pedal that defined the funky sounds of the 1970s. Whether you play guitar, bass, or keyboards, this versatile pedal reacts dynamically to your playing, delivering rich, expressive “Wah” and vowel-like tones.
Key Features
- Classic Auto-Wah Filtering – Recreates vintage envelope filter sounds with low-pass, band-pass, and high-pass modes, allowing for expressive funk tones and high-frequency sizzle.
- Versatile Range & Drive Modes – Switch between low and high frequency emphasis, and choose Up or Down drive settings to achieve either traditional Wah or cocked “Wow” sounds.
- Wide Dynamic Input & Gain Control – Handles instruments with a +30 dBu input range and offers up to +40 dB gain, making it suitable for both subtle filtering and bold tonal shaping.
Featuring three selectable filter types – low-pass, band-pass, and high-pass – the B-TRON III lets you dial in anything from a deep, funky quack to a sizzling high-end bite. The Range switch further tailors the sound, offering both low (for warm, vowel-like articulation) and high (for pronounced overtones) settings.
Additionally, the Drive switch provides Up and Down modes, letting you choose between a traditional sweeping Wah or a cocked “Wow” effect. Designed for powerful performance and tonal flexibility, the B-TRON III boasts an impressive gain range of +40 dB, ensuring a wide input dynamic range for professional use. Compact and robust, it runs on a standard 9V DC power supply and is built to handle the demands of the stage and studio alike.
Specifications
- Instrument Input: 1 x 1/4″ TS jack, unbalanced
- Input Impedance: 1 MΩ
- Maximum Input Level: +30 dBu
- Amp Output: 1 x 1/4″ TS jack, unbalanced
- Output Impedance: <600 Ω
- Maximum Output Level: +13 dBu
- Filter Mode: Lo-Pass, Band-Pass, Hi-Pass (rotary switch)
- Shape (Q) Range: 1.5 to 14, adjustable
- Gain: Up to +40 dB
- Range Switch: Low/High
- Drive Switch: Up/Down
- Power Supply: 9V DC, centre negative (>100 mA)
- Power Consumption: 0.25 W
- Dimensions: 61 x 100 x 171 mm (2.41 x 3.94 x 6.73″)
- Weight: 0.68 kg (1.5 lbs)
