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The design of microphone mixers (микрофонные микшеры) represents a sophisticated intersection of analog precision and functional signal routing. At its core, a mixer is an architectural solution to the problem of without introducing noise, distortion, or crosstalk.

Once the signals are summed, the circuit splits the mono signal into Left and Right buses. shemy mikrofonnyh miksherov

Professional circuits use XLR inputs with a differential amplifier (often an instrumentation amplifier topology). This exploits Common Mode Rejection (CMRR) to cancel out electromagnetic interference picked up by long cable runs. Professional circuits use XLR inputs with a differential

To ensure the sound doesn't seem louder when panned to the center, the circuit is designed to drop the signal by roughly 3dB to 6dB at the center point, maintaining constant perceived power. The circuit must include a way to inject

The circuit must include a way to inject DC voltage through two

is the feedback resistor. This allows for high gain and zero crosstalk. 3. Tone Control and EQ Sections