It is in no way limited to just guitar. It has been designed to work as a studio compressor, accepting any range of inputs and a frequency response and noise level matching the finest compressors made.
In live situations, the Compressor Pro can be used to achieve full sounding, polished performances as well as protect amplifiers and speakers from overload.
The Comp Pro is designed to work with any instrument, from voice and guitar to keyboard, bass, or drums. Use it when creating a podcast or YouTube video to maintain professional performance levels or even just noodling around on guitar on low gain settings to create tons of sustain.
For more details, head to guitarfactory.net.