For a classic sound, use the “Slightly Rude” setting and keep the Rudeness control below the half-way point. Settings above 50% will increase the aggressiveness of the compressed sound.
To achieve more dynamic effects, switch to the “Super Rude” mode. In this mode, the Rudeness knob controls the amount of overshoot in the compressor. This results in a distinctive processed sound on percussive material, especially on piano and drums.
Try chaining the Slightly Rude Compressor either before or after other compressors. Using the Fairchild 660 (or 670) or BF76 before or after the Slightly Rude Compressor will give you an amazing variety of compression options—especially if you experiment with the Super Rude mode.
Also be sure to try the Slightly Rude Compressor on full mixes or stereo submixes! It adds the “glue” that helps hold mixes together, something that’s often hard to achieve in the digital domain.