Vox V847A Wah Pedal

Vox V847A Wah Pedal

The Vox V847A Wah Pedal is a legendary guitar effect that has shaped the sound of countless recordings and live performances since its introduction in the early 1970s. Originally designed by Vox as part of their iconic “Wah‑Wah” line, the V847A remains one of the most sought‑after pedals for players who crave expressive, vocal‑like dynamics without sacrificing clarity or punch.

Historical Context

When Vox first released the V847 Wah in 1971, it was built around a simple yet powerful circuit that used a variable resistor (potentiometer) to sweep the center frequency of a band‑pass filter. The result was an unmistakable “wah” sound that could be shaped from subtle swells to aggressive, screaming peaks. Over the decades, the pedal has seen several revisions—most notably the 1975 V847A reissue, which added a dedicated volume control and refined the filter for smoother transitions.

The V847A quickly became a staple on stages worldwide, appearing in recordings by artists such as David Bowie, The Who, and Jimi Hendrix. Its influence can be heard in modern genres ranging from classic rock to progressive metal, proving that the pedal’s versatility transcends time.

Key Design Features

• Classic 2‑Band Filter: A low‑pass and high‑pass filter combined into a single band‑pass stage, giving the pedal its signature “wah” sweep.
• Volume Control: Allows players to blend the effect with clean tone or push it to the forefront of the mix.
• Footswitch Activation: A simple on/off switch that lets you toggle the wah in real time, perfect for solos and dynamic passages.
• Durable Construction: Heavy‑gauge metal housing, high‑quality pots, and a robust jack ensures reliability under touring conditions.
• Low Noise Design: The circuit uses low‑noise op‑amps and careful grounding to keep hiss and hum at bay.

Technical Specifications

Sound Characteristics

The Vox V847A delivers a warm, mid‑range emphasis that feels organic and responsive. When you push the pedal forward, the center frequency rises smoothly, creating a vocal‑like “wah” that can be used for subtle expression or dramatic solos. The built‑in volume knob lets you dial in just enough gain to taste without overwhelming your amp’s natural tone.

Because of its analog circuitry, the V847A reacts instantly to playing dynamics—striking the strings harder will push the filter faster, while a lighter touch yields a more restrained sweep. This tactile responsiveness is why many guitarists consider it an extension of their own voice.

Playing Techniques

• Classic Wah: Slide the foot pedal from low to high while maintaining steady pressure for a smooth, vocal effect.
• Stutter Wah: Rapidly tap the footswitch or use quick heel‑to‑toe motions to create rhythmic stutters that sync with your groove.
• Volume Swells: Combine the volume knob with the wah sweep for dynamic swells that rise and fall like a breath.
• Layered Effects: Pair the V847A with delay or reverb to add depth, or use it as a lead effect behind distortion for a thick, textured sound.

Compatibility and Setup

The pedal’s 1/4" input and output jacks make it compatible with virtually any guitar amplifier or multi‑effect processor. For optimal performance:

1. Connect the guitar to the V847A input.
2. Route the pedal’s output to your amp or rack unit.
3. Set the volume knob to a level that blends with your clean tone.
4. Adjust the footswitch position to taste—some players prefer it on for full effect, others off for subtle swells.

Maintenance Tips

• Keep the pedal’s exterior free of dust and moisture; a quick wipe with a dry cloth is usually sufficient.
• If you notice any loss in clarity or increased noise, check the power supply connections for loose contacts.
• Occasionally inspect the footswitch to ensure it remains responsive; replace if it feels sluggish.

Legacy and Influence

The Vox V847A Wah Pedal has inspired countless modern designs, from boutique analog recreations to digital emulations. Its timeless tone continues to be a favorite among guitarists who value authenticity and expressive control.

Whether you’re a seasoned professional or an aspiring player, the V847A offers a reliable, high‑quality wah experience that can elevate any performance. Its blend of classic design, robust construction, and versatile sound makes it a staple in the arsenal of musicians worldwide.