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Tremolo · T-Rex Effects

T-Rex Effects Tremster

The Tremster is an analog tremolo pedal modeled after vintage tube amp tremolo circuits, using an LDR design with a mode switch to select between sine and square wave modulation.

  • 9V DC · center −
  • 7 mA
  • Analog
  • Mono
New
from $89.01
Used (asking)
from $95

The rundown

Highlights

  • LDR-based tremolo circuit emulating vintage tube amp behavior
  • Sine and square wave mode options
  • Compact size at 99.1 x 122.7 mm
  • Low power draw of 7 mA at 9V DC
  • Battery compatible

Best for

Guitarists seeking classic tremolo effects with the character of vintage tube amp circuits in a pedalboard-friendly format.

Quick facts

Power
9V DC
Current draw
7 mA
Polarity
Center negative
Dimensions
99.1 × 122.7 mm
Stereo
No
MIDI
No
Expression input
No
Status
In production

Where to buy T-Rex Effects Tremster

$89.01 lowest new price · Reverb

Used listings asking $95–$120.56, median $112.74 (3 listings, small sample). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbNew$89.01View
ReverbUsed$95View
ReverbUsed$112.74View
ReverbUsed$128.37View

Prices last checked 22 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the Tremster use?

The Tremster runs on a 9V DC power supply with 7 mA draw and center-negative polarity.

Does the Tremster offer stereo output?

No, the Tremster does not feature stereo output.

Can the Tremster be controlled via MIDI or expression pedal?

The Tremster does not have MIDI or expression input capabilities.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.