At first don't believe people people telling this is fake. This is vintage compressor. It is very low everything, low ratio(I'm not sure it is constant), low speed, low output (unless you max sustain knob). Some people love this type of compression and similar boxes can be very expensive, but for beginners it is like wanting to buy cheese and getting feta cheese. Raising sustain adds also some blur to playing. side effect of being mild everything it has no noise on all settings. What I really don't understand setting sustain 3 o'clock and level 9 o'clock give less compression than setting level on 12.
The build is not the best. On off switch works very hard and loud.
It does what it says. You can find them under $50. If you've never used a compressor and want to find out how and why, try this one first. If you like it, hooray, it was cheap. If you want a better one later, at least it was cheap. It's footprint seems slightly larger than your average pedal, and you'll have to rip off the rubber bottom if you want to velcro it to your board. Whatever Joyo used as a foot does not like velcro to stick to it.
Based allegedly on the MXR Dynacomp, this is a great pedal, it sounds fairly transparent but can add a little 'squash' to your tone as required and enhance sustain too.
Nice subtle squash - perfect for single coils, it's a compressor, is it worth going nuts on such a subtle effect? it does the job very well, I leave it on the whole time, it's tonally transparent and doesn't suck too much unless you really turn up the attack.
It's a nice, cheap pedal that does its job. I only really use it when I'm looking for tones for tight riffs and to smooth out lead tones. I like to keep my cleans and lightly driven tones free of compression.