I can tell you these preamps are clean, clear, loud and quick with a very low noise floor. Gain, +48V, Pad and phase switch. Channel 2 operates as though the pad is always on.. Never got around to having it fixed.
Very handy and reliable gang of rackmount pres for tracking. The item "9k quad 4 channel microphone preamp" is in sale since Monday, January 25, 2021. This item is in the category "Musical Instruments\Pro Audio\Preamps & Channel Strips". The seller is "graftonbobb" and is located in Grafton, NSW.This item can be shipped worldwide.