From Hudson Electronics:

The Broadcast is a transformer coupled, discrete Class-A germanium pre-amplifier based on the classic broadcast consoles of the 1960s. In the low-gain setting, the Broadcast can cover everything from sparkling clean boost through to transparent overdrive, all with a healthy dose of volume available to push your amp. The Broadcast features a specially selected Triad steel-core transformer and a Germanium transistor. Advancing the gain on the Broadcast starts to saturate the transformer and the pedals discrete circuitry, giving rise to a gentle and dynamic compression coupled with subtle thickening of the mid-range. With the gain switch in the high setting and the trim control wound up, the Broadcast starts to deliver heavier distorted sounds with a warm and fuzzy edge to them.