I bought this when I compared my Walrus Audio ACS 1 with a friend's UAFX Dream.
Noticing that I was using the Fullerton voicing in the Walrus 95% of the time, it seemed like no doubt I would be better off with this pedal, which to me has a superior sound, with a lower price that the Walrus.
This is basically a Vibrato channel Deluxe Reverb in a box. The way it reacts to your playing and the way you turn the knobs is eerily similar to the real amp. In fact, if put side to side with a Tone Master version of the amp, I really doubt someone would notice the difference, if there is any.
Really, the only way I could tell a difference was when the "amp" was set to edge of breakup and playing as fast as I could. There is something in the way the top end is tamed as opposed to a real amp, which sags a little differently. When I pushed the master volume, the sound gets so compressed I can't tell any difference.
The mods are great, I have mine set to use the D-Tex mod when using the boost function, with the boost knob at full CCW. This way I get a more mid-pushed EQ, without the actual increase in volume, which is great for when you want to be heard without being of top of everyone else.
Other than that, I am always set at edge of breakup and use pedals to get more overdrive.
Stereo in and out is great for a wet/dry or true stereo rig and the build itself is excellent.
Now for the bad stuff: I had bought a Golden Reverberator, which I absolutely loved, but had to return because it's impossible to turn on trails mode without using the UAFX app, which NEVER works.
In fact, in three months with two pedals, I had it successfully connect to ONE of the pedals ONCE, to never being able to connect again. If had done that with the Reverb, I would've activated the trails mode and kept the pedal, because other than the actual pedal settings, I have no interest in artist settings or presets that I have to access with an app instead of using the physical switch of the pedal.
Instead I was able to connect the one time to the Dream '65, changed the switch functions to boost and live/preset and I'm home. I don't need anything else.
But why the hell does UAFX force us to use an app to change these things. Please, use dip swiches like everyone else, if you have no other way.
I got lucky with this one, to be able to connect to the app that one time. But I can guarantee I will never again buy another UAFX pedal if they force me to use the app, even if it comes with rainbows and unicorns.
Soundwise though, I mean, I returned the Walrus the next day...