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Filter Amplifier
From SnesLab
The pre-amplifier, straddling regions C4 and C4 of the jwdonal schematic
The Filter Amplifier, also known as the Pre-Amplifier, receives its input signal from the Stereo DAC. At its heart are two LM345 op-amps:
- U100C, for the left stereo channel
- U100D, for the right stereo channel
Its output is sent to the Post-Amplifier.