It’s a preamp that does this job by attenuating the high frequency sounds and boosting the thumping bass. [miceuz] found a nice DIY RIAA preamp project and found a nice little op amp ...
The output is boosted to a level equivalent to other audio sources such as tapes and CDs, and RIAA equalization is required to restore the original signal. Typically built into an audio or A/V ...
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