LE456 is a preamp sim roughly based on a piece of famous German gear.

LE456 has 2 channels and 2 modes per channel. Each channel/mode share the same features. Apart from the usual tone controls (drive, low, mid, high and contour), each channel/mode offers two different tone stacks that can be accessed via the focus switches. Bottom and bright switches can be used to boost the low and high frequencies respectively. On the low gain channel only (Clean/Crunch), the effectiveness of the bright switch decreases with the gain settings.