Coffman Labs come from Oregon in the US and the head of the company is a classically trained violinist AND a coffmanpsu300physicist. The G-1A Preamplifier is an all tube design that aims to bring the listener a true recreation of the musical performance.

” OK, so it looks great but what do you get for the not inconsiderable sum of $5500? Quite a lot actually! There’s a separate and visually matching outboard tube rectified (5AR4) power supply which connects to the main unit by a thick and sturdy umbilical. You get a phonostage with a step up transformer moving coil input and moving magnet input, a headphone amplifier, three line level inputs, two variable outputs and a tape output.”

Read the full review of the G-1A Preamplifier.


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