Austin

Hybrid ring modulation unit

Austin is hybrid (transistors and tubes) transformator ring modulation unit with bipolar control voltage
inputs and DC offset control. Since it's DC coupled, work as bipolar VCA is possible. Being rather
aggresive, Austin creates rich harmonic content with help of discrete differential pair design (soft,
symmetrical, sinewave-like clipping) and two-stage Nuvistor amplifier (asymmetrical clipping with
characteristic sound of saturating tubes). 2V p-p signal is sufficient for nice overdrive.
Intuitive LED feedback will show modulation input amount and polarity. When driven by audio rate signal,
spotting beat frequency patterns is possible.