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Based on price data from 2 merchants for "T-Rex Engineering Fuel Tank Junior". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introducing the T-Rex Engineering Fuel Tank Junior, your ultimate solution to powering your guitar or bass effects pedals. This compact, easy-to-use power supply is designed to cater to the needs of musicians across the globe, keeping your pedalboard clean, noise-free, and fully powered.
This little power giant delivers isolated power to up to five 9V DC effects pedals, handling virtually any combination of devices with ease. The Fuel Tank Junior's 5 isolated outputs ensure that your pedals get the clean, noise-free power they need to perform at their best.
Embrace the flexibility of the switchable 115V/230V operation, making it an ideal companion for international gigs. Its compact size makes it perfect for smaller pedalboards or on-the-go musicians. Say goodbye to the hums, buzzes, or unwanted noise during your performances; power your pedalboard with the T-Rex Fuel Tank Junior.
Key Features:
- Provides 5 x 9-volt DC power outputs (120mA each).
- Offers switchable 115V/230V operation for international use.
- Delivers clean, noise-free power through isolated outputs.
- Compact design, ideal for smaller pedalboards.
- Includes 1 mains power cable and 5 50cm DC cables with 2.1mm-2.1mm connectors.
Product specs
| Type | Pedalboard Power Supply |
| Inputs | IEC C7 Jack, 115V/230V AC Switch |
| Outputs | 5 x 9V DC 120mA |
| Maximum Output Current | 120mA per output |
| Connectivity | 2.1mm barrel |
| Isolated Output | Yes |
| Height | 1.4" |
| Width | 4.1" |
| Depth | 3.0" |
| Weight | 1.15 lbs. |
FAQs
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How many pedals can the T-Rex Fuel Tank Junior power at once?
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The T-Rex Fuel Tank Junior can power up to five pedals simultaneously, each with its own isolated 9V DC output.
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Are the outputs on the T-Rex Fuel Tank Junior isolated?
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Yes, each of the five outputs on the T-Rex Fuel Tank Junior is fully isolated to prevent noise and interference between pedals.
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What type of power input does the T-Rex Fuel Tank Junior require?
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The T-Rex Fuel Tank Junior requires an IEC C7 power input and has a switchable 115V/230V AC voltage setting for global use.
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Can the T-Rex Fuel Tank Junior handle high current draw pedals?
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Each output on the T-Rex Fuel Tank Junior provides up to 120mA, which is suitable for most standard pedals but may not be enough for high-current digital pedals.
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Does the T-Rex Fuel Tank Junior come with power cables?
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Yes, the T-Rex Fuel Tank Junior typically includes power cables compatible with most standard pedal connections.
Videos
American Musical Supply
T Rex Fuel Tank Junior Overview - American Musical Supply
T Rex Fuel Tank Junior Overview - American Musical Supply
American Musical Supply
Reviews
PROS
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Eliminates electrical hum, enhancing pedalboard noise performance
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Compact size with five 9V isolated outputs, ideal for small setups
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Durable build quality, described as built "like a tank"
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Noiseless operation, even with multiple pedals connected
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Versatile voltage switch (115v/230v) for international use
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Capability to power more than 5 effects with additional cables
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Long power cord provides flexibility in setup
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Aesthetically pleasing design that looks cool on pedalboards
CONS
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May not power certain boutique pedals effectively
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Power-hungry pedals like some echo/delay units may not function properly
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Some units shipped without all included power cables
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Not regulated, which may affect performance with specific 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 Junior.
Features and functionality
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The Fuel Tank Junior provides five 9V DC isolated outputs, each supporting up to 120 mA, suitable for analog and some digital pedals.
Source -
It's suggested that the power supply can run T-Rex pedals optimally at 9-12 volts, while Boss digital pedals require a strict 9V regulated output.
Source -
It's noted that, while the power supply provides isolated power, there are claims it may deliver closer to 12V when unloaded, potentially affecting voltage stability.
Source
User experience
Setup and maintenance
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A user lifted their pedalboard using 1/2 inch flush plugs to accommodate the Fuel Tank Junior, avoiding drilling and costly upgrades.
Source
4.5 out of 5
Based on 11 Reviews and 61 Ratings
3437
It does everything it claims to do!
Plain and simple these are 5 isolated power ports with 125 mA max current draw each and that's just all there is to it. If your board has exceeded you power supply, (and you don't have a super high end modular power system) get one of these and have a quick diy modular system!
136
Reliable and built like a tank
Built like a tank, strong and reliable with true isolated outputs. All you need for a good power supply.
209
Great Multi-Isolated PSU on a budget
For the money this is one of the best small isolated power supplies going. not quite a CIOCKs but about half the price. great for small boards. quiet.
250
Not regulated!
To my surprise, this is not regulated. Found out when using Fulltone pedals, that needed this. Truetone One Spot is the one you need.
Awesome power supply
If you have a few pedals, have enough money and want a very good power supply, this is, for me, the best option in the market.
137
Small, powerfull and perfect.
This is an isolated power supply in a perfect size, with enough power for a mini pedalboard. I recomend it.
Artist usage
Add artist
Recently Depeche Mode swept through Copenhagen on their 2017 World Tour and T-Rex jumped at the opportunity to meet up with Jez Webb, Martin Gore’s guitar tech, to take a sneak peek at how they use our pedals to produce the amazing sound they are known for. By coupling the T-Rex Octavius and Bass Juice analog pedals with the more modern Kemper and Rivera amps they produced an intoxicatingly fat, warm sound. It was particularly exciting to check-out how they were utilizing the FuelTank Power Supplies such as, Classic, Chameleon and Junior based on the amount of juice they need.
As Rob re-builds what his pedalboard setup is, at 3:02 you can see the T-Rex Fuel Tank jr.
According to Premier Guitar's rig rundown, Laiho's power supply is T-Rex Fuel Tank Junior. The power supply was also mentioned in Laiho's interview with Premier Guitar..
In these photos that show Harvey in the studio in 2022 (probably recording "I Inside the Old Year Dying"), a part of her pedalboard is visible. One of the items visible is the T-Rex Fuel Tank Junior.
Visible in this September 18, 2018 still from Rodger's Instagram Live.
The power supply can be seen in the centre of the attached picture
At 2:50 in this performance of Forever, we can see this pedal.
In this rig rundown, at 13:51, there is a shot of some of Michael Angelo Batio's pedals, and his T-Rex Fuel Tank Jr. can be seen.
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In this photo, T Rex Fuel Tank Junior Power Supply is visible.
Kevin Starr’s seen using a T Rex Fuel Tank Jr on his pedalboard
Album Usage
The T-Rex Engineering Fuel Tank Junior has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use T-Rex Engineering Fuel Tank Junior, it is most commonly used with the following gear.
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Community setups
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Add recommendation2 alternative and related items for T-Rex Engineering Fuel Tank Junior, curated by the Equipboard community.
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the classic Fuel tank was not fully isolated on very channel, but it was a quality product and a very similar predecessor to the Fuel Tank Jr
Made in China clone with fixed mains power cable and more included 9V DC cables. Delivers the same 120mA to each 5 outputs.
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