Fender Professional, amplification Operation Manual
DUAL PROFESSIONAL™ OWNERS’ MANUAL
INTRODUCTION
The Fender Amp Custom Shop is dedicated to creating high quality amplification to serve top artists
and discriminating players. The Dual Professional is a premiere member of the Custom Shop family of
amplifiers.
The first Dual Professional appeared in 1946. It was the first guitar amplifier to have 2 speakers, (10”
Special Design). It sported features such as inputs for 2 instruments and a mic. It had 3 knobs controlling mic volume, instrument volume, and tone. With more power than ever before (40 watts), it
had the volume to amplify rhythm guitar for the big band and western swing music of the time. And
thanks to its new military-proven 6L6 power tubes, the reliability the touring groups needed was
assured. It was the top of the line amp for the time.
In the spirit of all the great Fender amps of yesterday, we offer the Dual Professional of today. It is a
hand-made, point-to-point wired, tube instrument amplifier. There are no solid-state (transistor)
devices in the signal path of any kind. This amplifier was created from the efforts of a handful of top
craftsmen, players and designers who saw a need and envisioned a new amplifier. Like the other
Fender custom amps, the new Dual Professional is painstakingly built, one at a time, by a select
group of craftsmen at the Fender electronics factory in Lake Oswego, Oregon.
The Dual Professional was created for the player who requires a high power amplifier capable of lots
of clean volume and “headroom” while retaining the warm, sweet singing tones of tubes. It is
equipped with the 3-knob tube reverb for maximum versatility of reverb effects. The vibrato effect in
the Dual Professional is of the direct-coupled oscillator type not heard from since the early 60s, giving
a much different effect than the “Blackface” type tremolo, as found in the Twin Reverb®. It has 2 volume controls, switchable via the front panel CHANNEL A/B switch or the footswitch. There is also a
corresponding FAT switch for each volume control, so that two separate sounds may be preset and
selected during performance. The speakers in the Dual Professional are CELESTION® Vintage 30s,
selected for their clear, powerful tone. The 2 button footswitch provided will switch the vibrato on or
off as well as toggle between the VOLUME A/ FAT A and VOLUME B/ FAT B controls.
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 playing enjoyment.
DUAL PROFESSIONAL FRONT PANEL FUNCTIONS
A. INPUTS - Input 1 is the main guitar input for the Dual Professional. Input 2 will work as a 6dB
lower gain, low-Z input for hot, active pickups or as a passive output to link amplifiers in a multiamp set up. For example, when using a Dual Professional with a ‘59 Bassman, where you do
not wish to have reverb on the Bassman, first plug the guitar into the Dual Professional input 1.
Then connect a cord between Dual Professional input 2 and the Bassman® input 1, either channel. Now you can play both amps simultaneously.
B. DWELL - This Adjusts the length of the reverb by varying how hard the springs in the reverb pan
are driven.
C. MIX - Controls the depth or strength of the reverb.
D. TONE - Adjusts the brightness of the reverb.
E. CHANNEL A/B - Allows front panel selection of CHANNEL A or CHANNEL B.
SPECIAL NOTE: This switch is deactivated by plugging in the footswitch.
F. FAT A - Adds a 3dB boost in gain on the A CHANNEL only.
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