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18) Jeweled Pilot Light—Indicates that the amplifier’s power switch is in the “On” position. 19) On/Off Power—Provides AC power to the amplifier when in the “On” position— switched to the left. 20) Standby—This allows the amplifier to be powered up, but with the tubes in a non-operational mode. The Standby can be used instead of the power switch between performance sets, since it allows the amp to “shut down” while keeping the tubes warm and ready to go. It’s also best to power the amp up with t