A pedalboard can sound “noisy” for loads of reasons, but power is the one problem you can fix once and then stop thinking about.
A good power supply does three things:
- Keeps your board quiet (less hum/whine/hash)
- Keeps pedals stable (steady voltage + enough current so they behave properly)
- Keeps you future-proof (so you don’t rebuy when you add one more pedal)
Choose your power supply in 60 seconds
1) What’s the job?
- Gigging / recording? Prioritise isolated outputs and good regulation.
- Small board (2–5 pedals)? A compact isolated supply keeps it simple and quiet.
- Digital-heavy board? Make sure you’ve got high-current outlets with headroom.
- Growing board? Think spare outputs or expandability now, not later.
2) What do you need to power?
Do this quick checklist (it’s boring, but it saves money):
- Count pedals → that’s your minimum number of outlets
- Add 1–2 spare outlets for future pedals
- Note anything needing 12V / 15V / 18V / 24V
- Check for oddballs: centre-positive, unusual plugs, or (rarely) AC
3) How do you like to work?
- Fast & simple: clear labels, minimal “special cable archaeology”.
- Tweaker & expandable: modular systems, switchable voltages, and a good cable ecosystem.
Isolated outputs vs daisy chaining
This is the big decision most people are really making.
Daisy chains can be OK when…
- Your board is small
- You’re mostly running analogue pedals
- You’ve tested it and it’s quiet
Isolation becomes important fast when…
- You’re mixing digital + analogue (delay, reverb, multi-FX, loopers, MIDI stuff)
- You’re hearing noise that changes when you adjust a pedal’s settings
- You want a board that behaves the same at rehearsal, on stage, and in the studio
If you’re going for a “buy once” board, isolated power is one of the safest places to do it.
The specs that matter (and why)
Voltage: 9V is common, but not the whole story
Most pedals run on 9V DC, but modern boards often include pedals that can run at—or require—other voltages.
- 9V: the standard
- 12V / 15V / 18V: sometimes required, sometimes optional
- Higher voltage (when supported) can mean more headroom and a “cleaner” feel—especially on certain drives/boosts.
Rule: only use 12V/18V if the pedal explicitly supports it.
Current (mA): the “oomph” that stops pedals acting weird
Current is where people get caught out—especially with digital pedals.
- If a pedal doesn’t get enough current, it can sound thin, glitch, or behave unpredictably.
- The practical rule: match or exceed the pedal’s current requirement on that outlet.
- Having headroom is good. Running everything at the limit isn’t.
Regulation & noise: why good power makes boards quieter
Batteries are inconvenient, but they’re a useful reference point: they deliver clean DC.
A mains power supply has to convert AC into stable DC, then smooth and regulate it.
If you’ve ever blamed a pedal for noise and watched it vanish with a better supply… this is usually why.
Polarity, plugs & oddballs
Most modern pedals are 2.1mm centre-negative, but there are exceptions:
- Some vintage-style circuits (including certain germanium designs) can be centre-positive.
- Some pedals use different connectors or need special adaptors.
Shop power accessories & cables
3 quick setups that work
Small board (2–5 pedals)
Keep it compact, isolated, and easy. You’ll get a quieter board with fewer “mystery problems”.
Medium board (6–10 pedals, mix of analogue + 1–2 digital)
This is the most common scenario: enough isolated outlets, and enough current for modern delays/reverbs.
Bigger board / growing board (or you just want to stop thinking about power)
Buy for the end-state board. Expansion is usually cheaper than replacing a whole supply later.
Common mistakes (and the easy fixes)
- Buying by number of outputs only
Fix: check per-output current and voltage options. - Daisy chaining a noisy digital pedal
Fix: isolate the digital pedals (especially delay/reverb/looper/multi-FX). - Forgetting future pedals
Fix: add 1–2 spare outlets or pick an expandable system. - Assuming every pedal is centre-negative 2.1mm
Fix: confirm polarity/plug requirements before you power up (and use the right adaptor). Take especial care if you have classic ” pnp transistor” germanium fuzz style pedals – these sometimes have a centre positive requirement.
Why we like CIOKS
We stock CIOKS because the range is designed around real-world boards: quiet regulation, proper isolation, sensible current on modern outlets, and modular options if you want to expand later. They also have the flexibility to deal with centre positive pedals, and differing size input plugs, just by changing a lead.
Quick FAQ
Do I always need isolated power?
If your board is tiny and all-analogue, you might get away without it. But the moment you add digital pedals—or you want predictable quiet on different mains—isolated power becomes the safer choice.
Can I “over-current” a pedal?
Supplying more available current than a pedal needs is fine (the pedal draws what it needs). The problem is under-current, which can cause glitches and noise.
Can I run a pedal at 18V for “more headroom”?
Only if the pedal explicitly supports 18V. If it does, you may get more headroom and a slightly more open feel—especially on some drive/boost circuits.
What if I’m not sure what my pedals need?
Message us your pedal list (or a photo of the board underside + labels) and we’ll help match you to a clean, sensible setup.
