
CONGRATULATIONS
on your purchase of Sustainer, part of our Tonebug series of eect
pedals that combine gorgeous T-Rex tone, cool retro design, and
aordable pricing.
Sustainer delivers one of the great holy grails of classic rock music
– a guitar that sings like a violin, with single notes, chords and feedback tones playing on and on, until you tell them to stop.
Powered by an optimised compressor, an auto-gain function and a
simple set of controls, Sustainer gives you exactly what you need to
add sustain to any sound, clean or distorted.
Sustainer is simple to set up and use. Just turn the page to get
started.

4 STEPS TO ENDLESS SUSTAIN!
Using your Sustainer
Insert a 9V alkaline battery or connect to an electrical outlet using
the T-Rex Fuel Tank power supply (not included).
Plug your guitar into the INPUT jack, and run a lead from the OUTPUT jack into your amp.
Use the COMP knob to compress or “squeeze” your sound, and the
SUST knob to lengthen your sustain.
The ATTACK switch lets you choose between a slow (turtle) attack
for a subtler, more natural sound, and a fast (rabbit) attack for a
more radical squeeze and sustain eect.
HOW IT WORKS
Compressor
Your T-Rex Sustainer is really two eects in one: a sustain-optimised
compressor and a “time-release” gain. The compressor takes your
sound and “squeezes” it, limiting volume “peaks” and boosting quiet
sounds, or “troughs”. This resulting sound is more even and easier to
extend by adding gain.
Gain
Once your signal has been compressed, an amplier gradually adds
gain as the note your’re playing starts to face out. This keeps your
sound going, almost as long as you want it to.
A word of advice
A sustain eect is 100% classic, but it’s also a subtle eect. Make
sure to take plenty of time experimenting with dierent settings –
until you nd a setting or group of settings that matches your style
of music and your own personal sound.

TECHNICAL SPECIFICATIONS:
Input Impedance @ 1KHz Higher than 1M Ohm
Output Impedance @ 1KHz Lower than 1K Ohm
Power supply 9V DC
Minimum Power supply Voltage 8,5V DC
Maximum Power supply Voltage 12,5V DC
Current Draw @ 9V DC 50 mA
Maximum input signal Vp/p 3,2 Vp/p
Battery Type 9V battery 6F22 Alkaline
Battery Life 5 to 8 Hours
External connectors Input Jack. Output Jack, 9V DC Jack (center
pin negative)
Controls On/O, Compression, Sustain, Attack
Depth 120 mm
Width 78 mm
Height 60 mm
Weight (excl. battery and packaging) 0,400 Kg / 14,1 oz
T-REX WARRANTY CONDITIONS
T-Rex offers a 2-year warranty on all our products. In the unlikely event of a malfunction,
please contact our technical support at info@t-rex-effects.com before sending us the product
for repair. When the product has been sent to us at sender’s cost, we will repair or replace
your product and send it back to you - free of charge and usually within 3 weeks (shipping
not included). The product needs to be accompanied by a copy of your receipt, serial number, return address, phone number, e-mail address and a brief explanation of the problem.
Please note that we cannot replace a product until we have received it here in Denmark.
The warranty is lost if the product has been damaged by alteration, misuse, accident, or
neglect; or if the product has been repaired or serviced by persons not authorized by T-Rex.
Read more about warranty conditions at www.t-rex-effects.com.
ABOUT T-REX
Based in Vejle, Denmark, T-Rex Engineering makes classic and signature effects pedals for the
world’s best musicians. Our approach blends hi-tech innovation with old-world craftsmanship – always in the service of killer tone.
EU REGULATIONS • ENVIRONMENT PROTECTION
T-Rex accepts and follows the regulations and directives issued by the EU. We find these
environment protecting regulations very good, and we are happy to follow them.