As opposed to its 500 series sibling, the Warm Audio TB12 Tone Beast is a single-channel rackmount mic preamp that boasts a slew of sound-shaping abilities, earning it the name Tone Beast. Switchable opamps and output transformers, tons of gain, a dedicated tone section with a variety of parameters to play with, and even its own saturation control are just a few of the things the TB12 Tone Beast mic pre has to offer to give you some sweet tonal coloring.