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OP amp phono preamp gain - diyAudio
Stereo Pre Amplifier Circuit TL072
OPAMP's
How to build Phono Preamplifier - circuit diagram
Posted by HARRY at 2:26 AM
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Hi-Fi Stereo Preamp Circuit
5 Tone control (bass mid treble) circuits using NE5532, 4558, LF353
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Low Noise Balanced Microphone Preamp