T
ECH 21, THE COMPANY
Tech 21 was formed by a guitarist possessing the unusual combination of a trained ear
and electronics expertise. In 1989, B. Andrew Barta incorporated Tech 21 and made his
unique invention commercially available to players and studios around the world. His
highly-acclaimed SansAmp™ pioneered Tube Amplifier Emulation in professional appli-
cations for recording direct and performing live, and created an entirely new category of
signal processing. While there have since been many entries into this niche, SansAmp
continues to maintain its reputation as the industry standard.
With a full line of SansAmp models, Tech 21 also offers effect pedals and MIDI prod-
ucts, as well as “traditional” style amplifiers for guitar and bass. Each product is
thoughtfully and respectfully designed by Andrew himself with the player in mind. Our
goal is to provide you with flexible, versatile tools to cultivate, control, refine and rede-
fine your own individual sound. Tech 21 takes great pride in delivering consistent pro-
fessional quality sound, studio to studio, club to club, arena to arena.
S
ansAmp GED-2112, an Overview
Tech 21’s proprietary, 100%
analog
circuitry gives your instrument a natural warmth
and presence as if you were miking your instrument through a tube pre-amp. For studio
and live applications, our SansAmp Tube Amplifier Emulation technology enables you to
go straight into the mixer of a recorder or PA system via the XLR Direct Outputs.
Geddy Lee has been performing without onstage amps and speakers since the Test for
Echo Tour in 1996, favoring major household appliances instead. Wanting to stream-
line and simplify his gear for new projects, Geddy partnered with Tech 21 to design a
signature SansAmp, the GED-2112. This challenging collaboration involved distilling a
rackload of equipment into a single rackspace. It resulted in a new format for Parallel
Pre-Amping --having two separate internal pre-amps that run in parallel.
According to Geddy, “The GED-2112 is really a continuation of my long-time approach
to bass tone. A ‘deep clean’ tone coupled with the ‘edgy crunch’ I get from the
SansAmp RPM now all in one box. With selectable A/B inputs, and separate balanced
and unbalanced direct outputs, this box is the foundation for great bass tone in any
setup. Plus it’s green!”
The Drive pre-amp section is based upon the versatile SansAmp RPM, for a wide range
of sonic possibilities. The Deep pre-amp section offers thick, meaty tones. Saturation
goes from clean in lower settings to increased harmonics and tube-like compression in
higher settings. You can use either section independently or blend them externally
direct to a mixing board as well as to two amplifiers.
Unconventional? Unorthodox? Unique? You betcha.
FRONT PANEL
Input Jack
1/4" Input is 1MOhm, factory set at instrument level. Plugging into the front Input jack
overrides and disconnects the rear panel jacks (Input A and Input B).
Input Selector Switch
There are dual input jacks located on the rear panel to have 2 instruments plugged in and
ready to go. The front panel switch allows you to choose between Input A and Input B, as
long as you are not plugged into the front Input jack.
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DRIVE SECTION
The Drive section of the SansAmp GED-2112 is designed with active controls, which
cut and boost, rather than traditional passive controls which only cut. This effectively
doubles many of the control’s capabilities, giving you a much larger range of adjustabil-
ity and, ultimately, more variety. It should be noted that you need not necessarily set
everything at max to achieve maximum results. As you experiment and become familiar
with the interrelationship of the controls, you’ll easily be able to customize your own
sounds.
Drive
Adjusts the overall amount of gain and overdrive, similar to when the output section of
a tube amp is being pushed. Also controls the input sensitivity with clean sounds. For
fatter, more robust clean sounds, increase Drive until it starts to distort, then gradually
decrease until it disappears.
Bass and Treble
These active tone controls cut or boost ±12dB from unity gain at 12 o’clock. Bass is
80 Hz. Treble is 3.2kHz.
Mid Shift and Mid
Mid Shift is a parametric EQ control, with a sweep ranging from 170 Hz to 3.0 kHz,
which allows you to select the center frequency of the Mid control. Mid will then cut or
boost ±12dB from the frequency selected by the Mid Shift.
Blend
Blends the direct instrument signal with the SansAmp circuitry. In most cases, you will
probably have this set at maximum (100% SansAmp). For certain applications, however,
you may want to adjust the ratio of your direct signal to achieve your desired sound.
While the SansAmp Tube Amplifier Emulation circuitry is bypassed when Blend is at
minimum, the Bass, Mid Shift, Mid, Treble, and Level controls remain active.
Level 1
Adjusts the output level of the Drive Section.
Function Switch
(located between the Drive and Deep Sections)
Activates the circuitry and has a corresponding LED status indicator. (NOTE: In later
versions, the LED will pulsate when playing to indicate there is output.)
To engage, push the switch to the in position. For Mute, the switch should be in the out
position. Note: The Mute function affects all outputs, except the Tuner.
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