The combination of a balanced microphone transformer and a low noise amplifier is normally used for studio microphones. A design is shown to replace the transformer and associated amplifier. This incorporates the balanced and floating virtues of a transformer without the signal loss introduced ahead of a low noise amplifier. Gain and input stage current is adjustable. High common mode rejection is achieved with a balanced output and a very good noise figure at all gain settings.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.