(...) The Cello Palette and Palette Preamplifier (two different products) are "high level" preamplifiers, each having 6-band, variable, "program" equalization (EQ). From a gain perspective, maybe the better term for them are "line stages" with variable EQ. Max gain for them is around 20dB (switchable). You feed them with and they output "line level" signals - in the neighborhood of 1 volt. (...)
Charles