USE: I am using the KT-2A for tracking vocals and bass guitar.
PROS: Good solid build quality, great overall sound that add's character and warmth, built in PSU, extremely good value
CONS: It's really hard to write anything here even if the KT-2A cost double the price let alone what it actually costs! However, if I had to write something then lower noise is always useful at more extreme settings but at sensible output levels noise is inaudible.
OVERALL: I've been really impressed with both the sound and quality of this compressor regardless of price. I've found it to be a good step up from the software VST compressor's I have used and I like the character, smoothness and warmth the KT-2A imparts compared to other more expensive hardware units I've tried (though they were different types of compressors). The build quality seems to be excellent. The pots and switches feel extremely well made and better than on a lot of more expensive products I've used. It also has an internal PSU with an IEC socket so no wall-warts here! This compressor performs well above what it's price tag would suggest and I would definitely recommend it!