Percolate is a stereo tube amplifier, modelled at the deepest possible level, including a model for every single component in the circuit.
It is a stereo, two stages amplifier, with input and output transformers, preamplifier stage, tone control, power push-pull stage and output mix (wet-dry) control.
Two output taps are available: preamplifier and power stage. The first stage requires higher input level to saturate and the saturation is crisper. The output stage has a richer and smoother saturation.
Two options for the input transformer: transparent and iron (lots of color).
Two options for the output transformer: hi fidelity and iron (biggest difference is in the low frequency range).