Tip Ring Sleeve Input Circuitry
Above is the Tip Ring Sleeve jack input circuitry. The input signals are attenuated by R33
and R46 before reaching isolation IC U5A. Multi-path feedback is used to decrease the
distortion and increase the stability of the amplifier. The output signal on pin 1 of U5
connects to pin 5 of connector RC1 where volume control, VR2, (not shown) can control the
amplitude delivered to loop/mix summing amplifier, U5B (not shown).
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