This is a simple tubed mixer from the 50's. The circuit does not include the power supply and has 3 inputs with independent controls. The tubes are double and the inputs are high impedance.
SAM D5x and E5x MCUs Provide Powerful Performance and Enhanced Security Features CHANDLER, Ariz.,...
This circuit compresses the dynamic range (amplitudes) of an audio signal. The circuit is passive and...
We found this circuit in an old Linear Technology manual. It makes use of the LTC1329 and can be...