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T-Rex Engineering Fuel Tank Chameleon

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$125.00 to $199.00

4.5 (31)

2 Critic Reviews

8 Reviews

Find out who is using T-Rex Engineering Fuel Tank Chameleon

4 community setups

5 wishlisted

62 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated July 4, 2026.

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5.0 (3)

$199.00

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4.4 (227)

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5.0 (14)

$135.46 5 available New

$69.00 8 available Used

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4.8 (362)

$125.00

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£110.00

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Based on price data from 2 merchants for "T-Rex Engineering Fuel Tank Chameleon". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Introducing the T-Rex Engineering Fuel Tank Chameleon, a highly versatile pedalboard power supply designed to meet the demands of today's eclectic guitar pedal environment. This power supply can handle almost any pedal, regardless of its power rating, making it an essential companion for any musician.

This power supply stands out with its five fully isolated power outputs, each capable of supplying a hefty 300mA. It's designed with a set of dip switches, allowing you to power pedals that require 9, 12, or even 18 volts DC. Remarkably, it can also energize 12-volt AC pedals.

Travelling musicians will appreciate the Chameleon's switchable voltage feature, which allows it to seamlessly transition between 115 volts and 230 volts. This makes the T-Rex Fuel Tank Chameleon an indispensable tool for globe-trotting guitarists.

Founded in the 1990s, T-Rex Engineering has become a go-to brand for quality effects pedals and guitar gear. Known for using top-tier components and offering a lifetime use guarantee on their products, T-Rex has built a reputation for durability and reliability. Their products, including the renowned Replica digital delay and Mudhoney distortion, are a familiar sight on the pedalboards of renowned guitarists like David Gilmour, John Mayer, Mark Tremonti, and Steve Morse.

Key Features:

Versatile power supply compatible with a wide range of pedals
Five fully isolated power outputs, each rated at 300mA
Capable of powering 9-volt, 12-volt, and 18-volt DC pedals
Can also power 12-volt AC pedals
Voltage is switchable between 115 volts and 230 volts, making it suitable for international use

Owner's manual

T-Rex Engineering Fuel Tank Chameleon User Manual

Product specs

Type	Pedalboard Power Supply
Inputs	Standard IEC AC jack, 115V/230V switch
Outputs	4 x 9V/12V DC 300mA, 1 x 9V/18V DC 150mA, 1 x 12V AC
Maximum Output Current	1.5A
Connectivity	2.1mm barrel
Isolated Output	Yes
Height	1.53"
Width	3.18"
Depth	6.29"
Weight	3.3 lbs.

FAQs

Can the T-Rex Fuel Tank Chameleon power both 9V and 12V pedals simultaneously?: Yes, the T-Rex Fuel Tank Chameleon can power both 9V and 12V pedals simultaneously with its four 9V/12V DC outputs, each providing 300mA.
Is the T-Rex Fuel Tank Chameleon power supply suitable for international use?: Yes, the T-Rex Fuel Tank Chameleon is suitable for international use as it features a 115V/230V voltage switch, allowing it to operate in different regions.
Does the T-Rex Fuel Tank Chameleon provide isolated outputs for noise reduction?: Yes, the T-Rex Fuel Tank Chameleon offers isolated outputs, which help reduce noise and interference between connected pedals.
What kind of power input does the T-Rex Fuel Tank Chameleon require?: The T-Rex Fuel Tank Chameleon requires a standard IEC AC jack for power input, making it compatible with common power cables.
How many pedals can the T-Rex Fuel Tank Chameleon power at once?: The T-Rex Fuel Tank Chameleon can power up to six pedals simultaneously, with five DC outputs and one AC output available.

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Reviews

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PROS

Powers multiple voltages: 9V, 12V, 18V
Noise floor nearly inaudible, clean signal
Fits neatly under pedalboards
Includes a variety of cables for different needs
Isolated outputs prevent pedal humming
Can power high mA pedals efficiently
Compact and saves space on pedalboard
LED on light for visibility
Durable, long-lasting build
Versatile, suitable for different pedal setups

CONS

Gets very hot with prolonged use
Some units may introduce noise or hum to certain pedals
No on/off switch included
Not all pedals are compatible, especially ones requiring more than 300mA
Buzzing noise emitted from the unit itself (non-audio)
Not regulated, which may affect performance with some pedals

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about T-Rex Engineering Fuel Tank Chameleon.

Features and functionality

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The T-Rex Chameleon offers the ability to toggle voltages, accommodating pedals that require up to 18v, enhancing its versatility for varied pedal setups.
Source
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The Friedman power supply offers 10 ports, each at 350mA, which is beneficial for larger pedalboards requiring higher current outputs.
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Comparisons

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While the Fuel Tank Chameleon is praised, some users prefer the Voodoo Labs Pedal Power ISO-5 due to its similar price point and possibly preferred features.
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Some suggest using a power conditioner or a reliable power supply like Voodoo Labs to prevent pedal failures, highlighting potential issues with the Chameleon's power regulation.
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The Truetone 1Spot Pro CS7 is valued for its ability to power up to 8 pedals using daisy chain cables, despite officially having 7 outputs.
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User experience

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Owners have praised the Chameleon for reliable performance and are considering upgrades to models like the Goliath for additional power capabilities.
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After switching to the T-Rex Chameleon, two pedals blew out, emphasizing the importance of verifying correct voltage and polarity for each pedal connection.
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A user reported powering 8 pedals, including a Big Muff and tuner, with a Voodoo Lab ISO5 by pairing outputs, demonstrating its flexibility for compact setups.
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Use cases and applications

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The Chameleon is noted for handling 5-6 pedals easily, making it suitable for smaller pedalboards seeking a compact yet flexible power solution.
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The 1Spot CS-6 is highlighted for its dual 9v/18v outputs, catering to users with diverse voltage requirements on their pedalboards.
Source

Setup and maintenance

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Users experiencing blown-out pedals suggest checking the power supply voltage and polarity on every output, as incorrect settings may lead to failures.
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Using a DMM to check for DC voltage at amp input jacks can diagnose issues that may affect connected pedals, particularly with electrolytic decoupling caps.
Source

Critic Reviews

T-Rex Fuel Tank Chameleon Review - Premier Guitar

premierguitar.com

The T-Rex Fuel Tank Chameleon is a robust and versatile power supply, perfect for musicians needing variable voltage options. It delivers noiseless performance across multiple pedals, offering switchable outlets between 9V, 12V, and 18V, and accommodating up to five devices simultaneously. While its sturdy design and included cables are commendable for flexible setups, adjusting the voltage can be tricky due to the small switches. Ideal for complex rigs, the Chameleon might be overkill for simpler setups. Overall, it's a great choice for those seeking adaptability in their pedalboard power solutions.

positive

Full Review

T-Rex Fuel Tank Chameleon

soundonsound.com

The T-Rex Fuel Tank Chameleon is a pedalboard power supply that shines with its versatility, offering multiple isolated outputs with switchable voltage options. It's perfect for complex setups needing various power requirements. The device delivers clean power without noise issues, even when heavily loaded. While it runs slightly hot and could benefit from additional output options, it meets the needs of most users admirably. A robust choice for those with diverse pedal collections, it earns a solid recommendation.

positive

Full Review

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4.5 out of 5

Based on 8 Reviews and 31 Ratings

5 star

4 star

3 star

2 star

1 star

guitarnerd

373

almost 9 years ago

Revised Review after 7 years of usage

Got this back in 2014. Found it versatile with a bunch of useful cables. Fast forward to 2021, this unit gives out noise (literally coming out of the supply).

Relooked at the manual and Trex recommends to place this linear power supply away from effects to minimise noise. It's true as my Chameleon sits below the pedals. For years, there's noise from my 300mA MXR reverb pedal and 18V distortion/overdrive pedals. I've recently changed to a newer switching power supply and the board is finally dead silent.

Roles:

Singer Guitarist Bassist

Genres:

Rock Pop Pop rock

atr89

210

over 11 years ago

Best choice for high mA pedals.

Bought this exclusively for my high mA pedals like the POG2 and Blue Sky. Love this power supply. It makes a strange sound when its on. kind of a buzz. but this sound comes from the power supply. it does not sound on the amp or puts strange noise on the guitar signal. Love this one.

david_berg

199

almost 11 years ago

Nice power supply

I have owned this piece for just a week now but I have already come to love it. The outputs are isolated which is preventing your pedals from humming, something a have experienced before. The Fuel Tank is quite powerful and can run several pedals which requires a lot of electricity. No matter if you use several pedals on one output or one output for each pedal the Fuel Tank is sure to give you what you want!

Roles:

Guitarist Bassist

Genres:

Rock Pop Jazz