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Amplifier Audio Circuits
CMoy Headphone amplifier circuit
BY
Toni
Cmoy Audio Amplifier Circuit for Headphones with Printed Circuit Board. Cmoy is a small headphone amplifier circuit, the original design ...
Audio Circuits Preamplifier
JL AC6955F Bluetooth 5.1 audio module + SD card playback
BY
Toni
A multimedia player based on the Jieli JL AC6955F development, supporting Bluetooth 5.1 and SD card playback. Include lithium battery ...
Preamplifier Audio Circuits
Diy RIAA Phono Preamp circuit with opamp
BY
Toni
Diy RIAA Phono Preamp circuit with opamp It’s a phono preamp based on the design of rod ellion (sound-au.com) ituses ...
Circuits Audio Preamplifier
Circuit Preamplifier 2.1 stereo tone control + subwoofer
BY
Toni
Stereo preamplifier 2.1 , tone control + subwoofer, useful preamplifier circuit to be used in active boxes, combined with power ...
Hi Adam, You can connect a 12 or 18V DC source in the power connector, do not worry about polarity.