MusicRadar Verdict
This is an impressive wah - well-made and at a good price. We'd suggest trying it first, as flicking between modes can become a little too easy, but the sounds on offer are as good as we expect from Carl Martin.
Pros
- +
The concept is a good one and the tones are uniformly excellent.
Cons
- -
That mode switch is a little too sensitive.
MusicRadar's got your back
The 2 Wah actually includes a total of six differently voiced wahs and, although you can only access two of them at any one time, the breadth of tone available and the potential for serious versatility is already a given.
There are two basic modes - high and low - which are further divided into a trio of choices for each. An attack control, also sited on what passes for a front panel on any wah, allows for an efficient fine-tuning of the effect.
The trick with the 2 Wah lies in the subtle manipulation of the treadle. As you'd expect, pushing forward turns the wah on and off, and we found that it didn't really require too much pressure to operate the switch.
Heeling down on the treadle engages a second switch, one that toggles between the low and high modes; you simply need to choose which of the three relevant settings of each you want to use and away you go.
Sounds
The sounds are described as recreations of classic and vintage wahs, and Carl Martin's recommendation of using one for your rhythm duties and another for your solo work proves an effective approach.
There's no getting away from the sheer quality of the wahs that are on offer here, but we did find that an overly exuberant rocking of the treadle did tend to cause us to inadvertently change modes, which is a shame.
MusicRadar is the number one website for music-makers of all kinds, be they guitarists, drummers, keyboard players, DJs or producers...
- GEAR: We help musicians find the best gear with top-ranking gear round-ups and high-quality, authoritative reviews by a wide team of highly experienced experts.
- TIPS: We also provide tuition, from bite-sized tips to advanced work-outs and guidance from recognised musicians and stars.
- STARS: We talk to musicians and stars about their creative processes, and the nuts and bolts of their gear and technique. We give fans an insight into the craft of music-making that no other music website can.

“I’ve often wondered if it was the Devil grinning up at me, or God smiling down on me. I still haven’t figured out who had the final say”: How a feat of spontaneous creativity resulted in one of Pink Floyd’s most majestic moments

“It's transparent when not in operation, crisp when looping, and handles high-gain and complex audio sources with ease”: TC Electronic Ditto 2 Looper review

“Instead of pairing a new booster inside this new pedal, think of it as changing lanes inside the pedal”: Mythos and That Pedal Show team up for the Argo Boost Deluxe – an octave fuzz with a switchable boost