The configuration of the Tube Tech CL1B is pretty easy to follow and overall the compressor is quite easy to use. It has knobs for gain, ratio, release, attack, and threshold, and then has three knobs to control various things including what shows up on the meter. These are pretty basic parameters for a compressor, so if you have any idea about what you are doing with a compressor, you won't have any trouble with this unit. The manual for the Tube Tech CL1B is pretty complete, but isn't necessary when learning this compressor.
I really can't say enough about the warm and fullness that the Tube Tech CL1B possess. It is these qualities that make it a great compressor for vocals, but is also capable of getting good results with just about any other instrument you can think of that you would want to compress. I'm a huge fan of just about the whole line of Tube Tech compressors, the CL1B definitely fits right in with the other great sounding products that they have put out.
I've been using the Tube Tech CL1B for about two years and have found it to be truly a great sounding compressor. It is extremely easy to use and doesn't require any learning curve really. Like all top end compressors, the Tube Tech CL1B costs a pretty penny, but if you are a professional looking for top notch tone, it doesn't really get too much better than this. The Tube Tech CL1B is intended for professionals so you can't really expect it to be too cheap of a product. Tube Tech has a truly impressive line of gear, and the CL1B is a prime example of the world that they are capable of.