Top 10 best-selling Filter Pedal

The sleek form of the Carl Martin Ottawa is home to an envelope filter and auto wah. Carve out '60s style psychedelia, classic '70s style funk and plenty more.

Made for guitarists who don't want to be tied to their wah pedal, the Mooer Funky Monkey auto-wah keeps things compact and can be set to focus on the low, mid or high frequency range.

Digitech present a special re-issue of their famous DOD Envelope Filter 440. The Envelope Filter 440 makes your guitar or bass 'talk' in famed funk-style with classic quacking sounds.

Mooer's @Wah is an extremely-compact wah effects pedal. It has two settings (auto or touch) and five different wah filter modes in all. Adjustments can be made using the speed/gain and range controls.

The Q-Tron Plus - Electro Harmonix's filter effect pedal - helps your sound cut through the mix and allows you to enhance certain frequencies.

The Float Dual Moving Filter from Old Blood Noise Endeavors is the ultimate stompbox for filter fanatics. It enables you to independently filter two signals to unique effect.

This Nano edition Electro Harmonix stompbox neatly packs up the sound of the legendary Q-Tron and stuffs it inside a tiny metal box. Classic analogue envelope filtering effects courtesy of the masters.

The signature sound of The Police guitarist, Andy Summers was packed with an array of modulation boxes, but there was one effect that always stood out, which is exactly what the EHX Walking on the Moon delivers.

The Boss AW-3 Dynamic Wah offers guitarists a range of classic auto-wah and dynamic wah effects, as well as a Humanizer effect that simulates human vocals. The pedal also has a input for bass guitar.