I'd like to share some information, and resources, which are useful to get the most of the wah effect within the Amplifire. I told myself that as soon as the forum was running, I'd post what I'd learned over the past twelve months of having my Amplifire. I did a lot of searching around last year to find out how to make a great wah with my AF3, using an expression pedal in the loop. I found the Sweetwater Dunlop Wah comparison page to be invaluable, for getting frequencies for classic wah sounds. This page shows all (I think) of the current models of Dunlop Wah frequency values - http://www.sweetwater.com/feature/dunlop/wah-pedals/ There is a Sweetwater video with a comparison of some of the Dunlop Wah pedals as well here: Bryan Keyhoe, the Dunlop demonstrator describes the 'Q' values between some of their pedals on the video, in fairly basic terms, but the differences can be heard, and the comparisons are useful. Using this information, I created the following wah block which is based on the original Crybaby GCB95 wah: This is my go to wah, which I find works with all kinds of amps. I've set this to be a Lowpass wah rather than a Bandpass. I've seen some peoples' wah settings built with a bandpass filter, but I find this to be more musical and easier to cut through a band without it losing too much low end when working. This works just like a crybaby with a resonant peak near the cutoff point of the lowpass in operation, giving it's tone and character. The Freq Min and Max are set at 350Hz and 2.2 KHz, as per the original Crybaby values. There is no Q value stated on the Sweetwater page, so I adjusted this until I came up with one I liked. Lower values will be flatter in response, and higher values will be have a sharper resonant peak, and sound sharper and more nasal. The T parameters (Sense, Attack and Release), along with the LFO parameters can be ignored. They won't have any effect in a pedal wah like this. The PARK, Threshold and Timer settings allow the wah to switch off automatically when the heel is down (below 28% in this instance), and only after the Timer value has elapsed. I've compared this to my Self-modified Crybaby, and it sounds really close. It works great in my band, and really sounds amazing. I'd use this rather than the Crybaby as it doesn't suffer from any microphonics (I put a Fulltone Halo inductor in mine). I've got to give a credit to Dipendra Bagchee for his great YouTube video where he tone matched his Jerry Cantrell Wah - this was a big source of inspiration. Also, the great Rich Antonelli has posted a great video about patching an expression pedal for a wah into an Amplifire I hope this is useful to you. Simon.