Fuel Tank Chameleon

Flexible Power for Serious Pedalboards

Isolated power. Multiple voltages. One rugged T-Rex power supply.

The T-Rex FuelTank Chameleon was designed for pedalboards that demand more than basic 9V power.

With individually isolated outputs, selectable voltage options, and support for both DC and AC pedals, Chameleon gives players the flexibility to power a wide variety of effects from one compact, road-ready unit.

Built for traditional stompboxes, boutique effects, and mixed-voltage pedalboards, Chameleon remains one of the most versatile members of the FuelTank family.

One Supply. Multiple Voltages.

Not every pedal wants the same power.

FuelTank Chameleon lets you configure its outputs for a range of pedal requirements, including:

• 9V DC
• 12V DC
• 18V DC
• 12V AC

That makes it especially useful for boards combining conventional 9V pedals with effects that require higher or less-common operating voltages.

Each output is electrically isolated to help reduce ground-loop noise and unwanted interaction between pedals.

At 9V or 12V DC, each standard output can provide up to 300mA of available current. At 18V DC, available current is reduced to 150mA.

True Isolation

Unlike a conventional daisy-chain supply, FuelTank Chameleon uses isolated power sections so pedals do not simply share one common supply rail.

That matters on larger or more complex boards, where isolation can help reduce unwanted hum, ground-loop problems, and noise caused by incompatible pedals sharing power.

It also makes Chameleon a substantially more flexible choice than a shared-current power supply for players running a mixture of analog and digital effects.

Made for Mixed Pedalboards

FuelTank Chameleon is a strong choice for rigs built around:

• Overdrive and distortion
• Fuzz
• Compressors
• Tuners
• Wah
• Analog modulation
• Delay and reverb
• Boutique pedals
• 12V DC effects
• 18V DC effects
• Compatible 12V AC pedals

Before connecting any pedal, always verify its required voltage, AC/DC format, polarity, and current draw.

Need More Current? Combine Two Outputs.

FuelTank Chameleon gives you another level of flexibility when a pedal needs more current than a single output can provide.

Using the proper T-Rex current-doubling cable, two compatible 300mA outputs can be combined in parallel to provide:

300mA + 300mA = up to 600mA available

The voltage stays the same while the available current budget increases.

That makes Chameleon capable of powering certain higher-current pedals and processors that exceed the capacity of one individual output.

A Real T-Rex Example

The T-Rex SoulMate Acoustic requires:

12V DC / up to 560mA

One Chameleon output provides:

12V / 300mA

Not enough.

Two compatible 12V outputs combined with the proper current-doubling cable provide:

12V / up to 600mA

✓ Enough current for the SoulMate Acoustic.

This is the T-Rex Power Budget concept in action:

Match the voltage.
Match AC or DC.
Match the polarity.
Make sure enough current is available.

Built for the Road

FuelTank Chameleon combines its flexible power architecture with the sturdy metal construction that defined the original T-Rex FuelTank series.

A standard IEC mains connection eliminates the need for a separate external wall adapter, while switchable 115V / 230V operation makes the Chameleon suitable for international touring.

Features

• Five individually isolated power outputs
• Up to 300mA available per standard 9V/12V output
• Selectable 9V DC operation
• Selectable 12V DC operation
• 18V DC capability
• 12V AC capability
• Current-doubling capability with the proper T-Rex cable
• Center-negative DC outputs
• Switchable 115V / 230V mains input
• Standard IEC power connection
• Rugged metal enclosure
• Compact pedalboard-friendly footprint
• Power and adapter cables included

Specifications

• Outputs: 5 individually isolated
• Output current: up to 300mA per standard 9V/12V output
• 18V output current: up to 150mA
• Supported voltages: 9V DC, 12V DC, 18V DC, 12V AC
• Input voltage: switchable 115V / 230V
• Maximum power consumption: 40W
• Dimensions: 6.3 × 3.2 × 1.5 in
• Weight: 1.74 lb / 0.79 kg
• Construction: metal enclosure
• Country of origin: China

Your Chameleon Power Budget

Each Chameleon output gives you a current budget.

At 9V or 12V DC, a standard output can provide up to:

300mA

If your pedal requires:

70mA

and the output can supply:

300mA

that is perfectly fine.

The pedal draws only the current it needs.

For higher-current devices, two compatible outputs can be combined with the proper current-doubling cable to create a larger available current budget.

Learn more: Understanding Your Pedalboard Power Budget

The Flexible FuelTank

The original FuelTank helped simplify the pedalboard.

Chameleon took the idea further.

Isolation and selectable voltage options give players the freedom to mix pedals with very different power requirements while keeping the board organized around one dependable supply.

For players building boards with different voltages, isolated power requirements, or occasional higher-current devices, FuelTank Chameleon remains one of the most adaptable power supplies in the T-Rex lineup.