If you've never experienced through zero flanging (TZF), you owe it to yourself to try this. This effect was previously an extremely rare feature to find, and initially could only be done with tape. Like all flangers, the filtering effect stands out more if you feed it a harmonically rich signal, like a distorted one. The sweep range is ultra-wide, similar to an A/DA Flanger. Personally, I'm a fan of envelope-controlled devices, and this one does not disappoint. Indeed, it makes the Liqui-Flange several different pedals in one. I'd buy one for the envelope-controlled program alone. Very soulful. The "step" program does that nice sample-and hold thing, except with a comb filter rather than a wah filter. Nice, and great for opening licks that set the tempo of a song (think "Won't Get Fooled Again"). The modulation possibilities are wonderful. Just an endless array of feels available.

Most of the sound samples you will hear will likely be in mono. Most music store staff I've mentioned it to are too accustomed to the cheezy "stereo" of budget boxes that have delay coming out one jack and clean out the other. Fuggedaboudit! This is *real* stereo. Plug into two amps and you will be knocked out by the way the flange not only sweeps, but sweeps across the amps and back. Gorgeous. Being stereo also means you can "reflange" by plugging into one input, taking that output and feeding it into the opposite channel. I would have liked a little more control over the envelope-based programs, but I guess there are limits to what you can stuff in there. Wish it had inputs for external control, but you can't have everything.

Build quality is fine. Stuffing so many things in that chassis means the program switch is kind of tiny for what it does. With 11 different positions, you'd kind of like a bigger knob so that you can easily see the difference between positions, but like I say, how many choices do you have when you stick that much in a box that size?

Easy to quickly exhaust the possibilities of pedals costing much more. This baby has a lot of tricks up its sleeve. For what it can do in a gigging situation, a terrific return on investment.

Take your Hendrix tribute band, plug your Fuzz Face into a Liqui-Flange and two amps, do your best "Axis Bold As Love" and watch their jaws fall down. Several other pedals have done players a service by providing the through-zero flanging they had heard on record and hoped to be able to replicate, but this is the first one I've used that does it in stereo. Killer, just killer.