I have a professional studio set up with an all analogue set-up almost. I own a couple of compressors but nothing quite cuts through like this one does. As expected of a tube optical compressor, it provides a warm, yet subtle compression. Not only does it work well on instruments like guitar and bass, but also is equally effective while laying don vocal tracks. One thing to note is that you should let it warm up for a minute when you're going to use it. Also in spite of the contents used for its construction, the operation is silent and has no malfunctioning whatsoever. Really high-quality components ensure you get the best of the output. Satisfied with my purchase, since you won't find a tube compressor this good, at such an affordable price.