Fender Super Bassman 300 User Manual

Connects your bass to the amplifier. Features two inputs with different sensitivities.

Volume, Bass, Mid, Treble controls for the classic passive tone stack.

Gain, Blend, Volume, Bass, Mid Freq/Level, Treble for the active tone stack.

Switch between Vintage and Overdrive channels using the front panel switch or footswitch.

Controls overall amplifier volume and indicates power status.

Controls power on/off and standby mode for tube preservation.

Connects to power and protects against electrical faults.

Connects speakers and sets impedance for safe operation.

Monitors and adjusts bias setting for power output tubes.

Enables remote channel switching and connects a tuner.

Provides PREAMP OUT/PWR AMP IN for effects and XLR OUT for recording/PA.

Protects individual power tube pairs from failure.

Explains bias settings (WARM/NORMAL/COOL) and their effect on tone, life, and power.

Procedure for adjusting bias levels and resetting to factory defaults.

Interprets LED indicators for tube health, bias adjustment, and failures.

Identifies tube types and locations for preamp and power amp sections.

Step-by-step instructions for safely removing and installing tubes.

Guide to replacing fuses and proper techniques for handling tubes.

Resolves issues with no sound, low volume, or signal path problems.

Addresses feedback, microphonic tubes, and tone-related issues.

Diagnoses blown fuses, power amp performance, and electrical faults.

Details part numbers, input/output impedances, and tone control ranges.

Provides the amplifier's physical size and total weight.