RIAA compensated stereo preamp with NE5532
If your stereo amplifier does not have an input for a record player, you should use this circuit between your turntable and your amplifier. The output of your turntable follows a gain-bandwidth curve called the RIAA compensation curve. The standard AUX input on your stereo does not. Records will sound very strange without an RIAA preamp. Link
Other Link
Op-Amp Microphone Preamp by NE5534
Vinyl Pre-Amplifier with NE5534
Doorphone Intercom with LM386
35W Hi-Fi AUDIO POWER AMPLIFIER by TDA2050
