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Details the low-noise amplifier for moving coil cartridges and RIAA equalization for MC/MM cartridges.
Explains voltage and current amplifier stages, class A, quasi-complementary output, and protection circuits.
Describes toroidal transformer, rectification, smoothing, and sub-regulators providing +/-15V and +8V supplies.
Explains speaker output protection from switch on/off thump using mute relays and a 5-second turn-on delay.