I was going to do a short right up yesterday, but I stayed up too late fiddling with it.
Bottom Line Up Front - This is a really cool pedal to play around with. I think the added Fat and Tone controls on the FF7 make it worth it to get it over the normal Fuzz Factory, I definitely used the Fat knob a lot. It's not worth it to me to spend $500 on one though, and now that I've discovered DemonFX has a blatant disregard for intellectual property, I'd say you shouldn't by this specific clone unless you buy used. The Vexter is also a good option, it's a 5 knob version that can be found for less than $150 and comes in vertical and horizontal
First thing I noticed out of the box was that the build quality was very good for a Chinese knockoff. Full metal enclosure, nice sparkly paint. Flipped it over and it had a Made In Canada sticker. Weird to think China is outsourcing to Canada. Probably global trade politics I'm not going to get into.
This thing is pretty cool, you can make really whacky sounds out of it, but it's a lot more forgiving than you would think. The knob labeling is very intuitive. There are a lot of redundant positions, especially with how interactive the knobs are.
It can make just about any sound there is to be made from 2 or 3 germanium transistors. There's too much range of sound from this thing to really review the sound quality of it, I had no trouble getting the sounds in my head to come out of my guitar when I was using it. Instead I'll focus on the vibe it gave off.
I think the ideal use case for this pedal would be as a sort of "eternal soup" fuzz. Throw it in your practice space, find a sound you like, and then with each passing day bump the knobs a little bit, never really trying to find the same sound twice. It's like the old saying goes, "no man can ever eat the same stew twice, for it is not the same stew, and he is not the same man".
My only dislike - and I am not the first person to discover this - is that there is this one sound that's almost too easy to get out of it. If you don't set at least one knob to some sort of extreme, it will sound like a slightly tweaked Fuzz Face, which can be a good or a bad thing. The Fat knob helps alleviate this. Also the tone control doesn't need to be on a switch, but it can be fun. I would have used it in tandem with a boost.