If you can't or simply don't want to use batteries to power your guitar effect pedal, your other option would be a pedal power supply. Most stompboxes don't come with a power supply included as standard, but you can always pick up any power supply or pedal power brick you need here.
The Pedal Power Supply You Need
Every guitar effect pedal requires power and therefore a power supply. As such, a common way to hook them up involves a 9-Volt DC guitar pedal power supply, most of which feature a 2.1mm barrel plug and a centre-negative polarity - a bit of a mouthful but it's usually all you need to know. On the other hand, there are guitar effects that require a different or even a specific kind of power supply, so it's important to know what you're looking for.
Pay Attention to Voltages, Plugs and More
Since feeding it too little power results in suboptimal sound and feeding it too much can break it, it's important to know what voltage (V) your guitar pedal requires. For most pedals, that's going to be 9V, for some it'll be 12V or 14V. You'll also want to make sure that your new pedal power supply meets the minimum requirements in terms of amperes (A). Over-capacity isn't harmful here, in fact, it's recommended. Not enough capacity, on the other hand, will have a negative effect on the sound. Then, it's time to double-check the plugs and polarity. In most cases, a 2.1mm barrel plug will work. To prevent damage, also check to see whether you need an AC or a DC power supply and either centre-negative or centre-positive polarity. For a more extensive run-down and buyer's tips, check out our Guitar Effect Power Supply Buyer's Guide.
Guitar Effect Multi-Power Supply
If you own a stack of guitar effects and want to power a bunch of them in one convenient shot, a multi-power supply is what you need. Multi-pedal power supplies are larger than standard 9V power supplies and feature either multiple power ports or a single power output that you essentially multiply with daisy chain cables. If you're going for a multi-power supply, start by checking the power capacity in amperes and see if that's enough for the sum of all of the pedals you want to plug in. Some models also offer the option to supply pedals with different voltages - something you can double-check with the specifications listed on any of our product pages.
Frequently Asked Questions About Guitar Pedal Power Supplies
Which power supply do I need to power my guitar effect?
Most but not all guitar pedals require a 9V DC centre-negative power supply equipped with a 2.1mm barrel plug. Always double-check and cross-reference the specs of the adapter and the pedal to make sure they're compatible with each other, or see our Guitar Pedal Power Supply Buyer's Guide for more info.
Does the voltage matter when it comes to guitar pedals?
Yes, the voltage is extremely important since feeding any pedal too much power can actually break it. Using a power supply that isn't powerful enough, on the other hand, usually leads to poor sound quality. For more help picking out an effect pedal power supply, check out our Guitar Pedal Power Supply Buyer's Guide.
Do I need a multi-pedal power supply?
You'll only need a multi-power supply if you want to power various pedals at the same time. So, if you're only using one pedal, you won't need a multi-power supply unless you're thinking of expanding your rig.
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