K. CHANNEL SELECT - When this button is pressed, the amp switches from the NORMAL channel to the DRIVE channel. L. MASTER - Adjusts the overall volume of the DRIVE channel . M. REVERB - Adjusts the amount of reverb present in both the NORMAL and DRIVE Channels. N. PRESENCE - Adjusts the amount of very high frequencies present in both the NORMAL and DRIVE Channels. O. PREAMP OUT - This unbalanced jack provides an output signal from the preamp and is pre-reverb. It may be used to drive effects units in an effects loop, to drive additional amplifiers in a multi-amp set up, or as a preamp send to a mixing console. P. POWER AMP IN - This unbalanced jack provides a return from your effects units and is pre-reverb. This jack can also be used as a power amp input.
Q. FOOTSWITCH (INCLUDED) - Plug-in connection for the remote footswitch to select between the NORMAL and DRIVE channels and to select "More Drive". Using the footswitch overrides the front panel select buttons. NOTE: Any good quality patch cord will work with the remote footswitch, however, a speaker grade cord is preferable to a coax guitar cord. R. PILOT JEWEL - Illuminates if the Hot Rod Deluxe is receiving power. Should this bulb burn out, turn off and unplug the amplifier, unscrew the red jewel and replace the lamp with a type T47 bulb. S. STANDBY SWITCH - Turns the amplifier on and off. In the STANDBY position, the amplifier is off. When the "On/Off" switch (item T) is turned on, power is supplied to the tube filaments eliminating warm-up time. Using the STANDBY SWITCH during short breaks versus using the on/off switch will increase tube life. T. POWER SWITCH - Turns the AC power ON and OFF. When the amplifier is in the OFF position, the amplifier is completely shut down.
