While most players place a wah pedal at the start of their chain, you can get dramatic, psychedelic sounds if you place a brightly-voiced wah pedal after your drives, or after a fuzz. With the toe down, a Cry Baby can make even a bass-heavy Russian Big Muff sound like a cranked Fender Blender. What is better, true or buffered bypass? As with other filter-based effects, Q refers to the ratio of centre frequency to bandwidth. If that sounds too technical, think of it simply as whether the frequency range boosted by the filter is narrow or wide. Read more about how how we test products and services and how we make our recommendations. Related buyer's guides Dunlop are the most famous modern manufacturers of wah pedals with their ubiquitous Cry Baby and numerous signature wahs. There are many more excellent options from Morley, Electro-Harmonix and, of course, Vox. Why Should I Choose a Wah Pedals?

Purists say that voicing is most to do with the type of inductor used, with the most common types today being red and yellow fasels. However, there's enough supporting circuitry that the overall voicing change due to inductor type is subtle. That said, plenty on forums would disagree. Invented in the ‘60s and popularised by the likes of Jimi Hendrix, Kirk Hammett and Jerry Cantrell — wah pedals are adored for the articulation and nuance that they provide to guitar players. In fact, you’d probably have a tough time finding guitarists without one on their pedalboards! For many wah pedals, the range and Q are fixed, making up the 'voice' of the wah. However, some more expensive models have control over the range and Q, making them radically more versatile. There's three main variables to consider when purchasing - voicing, then the range and Q of the filter. For example, the Cry Baby GCB-95 has a filter centered around 750Hz, with a range from 450Hz to 1.5kHz, and an 18dB boost. Wah pedals are a lot of fun. Because they are controlled by your foot on a treadle, they uniquely feel like your personal expression as a guitar player - no two players wah alike.Around since the ‘60s, the legendary Vox wah pedal has been a popular choice among players for decades — with its simple no-frills design and iconic tone. The Jim Dunlop Cry Baby series is also favoured by many, encompassing a bunch of signature wah pedals from influential players including Slash, Tom Morello and John Petrucci alongside its standard lineup. Mini wah pedals have taken the market by storm in recent years, with their compact footprint saving precious pedalboard real-estate! You can trust Guitar World Our expert reviewers spend hours testing and comparing guitar products so you can choose the best for you. Find out more about how we test. Others are darker, meaning that even toe-down they are smoother in sound. The range of boost and the centre frequency of the filter differs too. For instance, the Vox V847 and Cry Baby have a comparable range, but the Cry Baby attenuates low frequency harmonics much more aggressively, making for a different voice.

Though there are endless variations on the wah pedal, deciding which is for you is simple. Every player will have a different opinion on what a great wah pedal is, usually based on its voicing. It's no accident that wahs are often described as a 'vocal' effect.