What is analog compressor?
A hardware compressor that operates on an audio signal using analog circuits, such as tube or optical circuits, to compress the audio signal.
What are tube compressors good for?
The tubes in an optical compressor can also help add a little bit of depth and warmth to the low end. When used on acoustic instruments, compressing around -2dB or -3dB can help bring out the harmonic content of the instrument and make the high and lower strings have a consistent volume.
What is a FET compressor?
FET compressors emulate the tube/valve sound using transistor circuits. They are fast and bright sounding and are popular with rock genres for exactly these reasons. FET compressors add both punch and colour to a sound and can be extremely useful on percussive sounds or sounds that need a snappy transients.