Fender Rumble Bass Owner's Manual - page 3
RUMBLE BASS
®
OWNERS’ MANUAL
INTRODUCTION
The Fender Amp Custom Shop is dedicated to creating high quality amplification to serve
top artists and discriminating players. The Rumble Bass is a unique amplifier with many
possibilities. It is a 300 watt, two channel bass “Head” with special features which set it
apart from anything offered before.
The Rumble Bass is an all tube instrument amplifier. There are no solid-state (transistor)
devices in the signal path of any kind. Its’ two channels may be operated in combine mode
or switch mode. In switch mode, the footswitch (provided) may be used to switch channels
or to “A-B” switch between two different instruments. In combine mode, one instrument
may be linked to both channels for infinite tonal shaping, or two instruments can be played
simultaneously, each with independent control of volume and tone. A “Cut” control on
each channel allows a cut in midrange frequencies to suit playing with a pick or for playing
slap style. A straight forward Treble-Bass-Mid Tone control section allows for adjustments
in tonal balance at frequencies musically relevant to the bass guitar. An effects loop with a
mix control to infinitely adjust the amount of external effects is standard, and is switchable,
on or off, in both channels. Like the other Fender custom amps, the Rumble Bass is
painstakingly built, one at a time, by a select group of craftsmen at the Fender electronics
factory in Lake Oswego, Oregon.
It is suggested that you read this manual thoroughly to understand all the features and
functions of this amplifier. This amplifier will provide years of trouble-free service and play-
ing enjoyment.