The new AT-4 – Tube Preamp – at Its Finest.

The AT-4β Beta mic pre shares a few common features with the classic AT-3 but as you will see, not all that meets the eye for this beautiful sounding mic pre amp is the same…

The AT-4 is gain active between both triodes 7025 tubes and employs negative feed-back in the amplifing stage, providing improved stability and a very linear frequency response, reduced distortion and lower THD. The AT-4 offers high quality Sowter and Lundhal transformer input transformers, with a transformerless DI input. Ither features include adjustable 75Hz high-pass filter, and switchable high and- low Z input impedance, these preamps offer a classic musical tube sound combined with features tailored to a modern workflow.