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Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal
Donner

Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal

Bottom line: The Donner DP-1 Guitar Power Supply 10 Isolated DC Output ($36.99 on Amazon as of 2026-10-21 10:14 UTC): 10 outputs cover a full board: 7x 9V 100mA, 1x 9V 500mA, 1x 12V, 1x 18V; main trade-off: isolation is circuit-simulated, not transformer-based - Donner says so outright.

$36.99

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 10 outputs cover a full board: 7x 9V 100mA, 1x 9V 500mA, 1x 12V, 1x 18V
  • ✓ 500mA tap handles a digital delay or multi-effects unit no daisy chain can
  • ✓ Independent short-circuit protection isolates a fault to one output
  • ✓ Aluminum alloy housing keeps under-board weight and bulk down

Cons

  • ✗ Isolation is circuit-simulated, not transformer-based - Donner says so outright
  • ✗ Only one 500mA tap, so two power-hungry digital pedals will not both fit
  • ✗ 12V and 18V taps capped at 100mA each, limiting bigger preamps
  • ✗ Blue LED is bright and may need taping over on a dark stage

Manufacturer description

Power ten pedals from one 39.99 dollar box: the Donner DP-1 delivers 10 isolated DC outputs sized for a real pedalboard - seven 9V 100mA taps for standard overdrives, fuzzes, and tuners, one 9V 500mA tap for a digital delay or multi-effects unit, plus dedicated 12V 100mA and 18V 100mA outputs for the odd synth pedal or high-headroom preamp. The housing is aluminum alloy, so the DP-1 stays light enough to velcro under a board without adding meaningful weight to your gig bag. Donner's noise-reduction circuit and DC conversion target the hum and hiss that daisy chains introduce into high-gain…

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SpecPicks Verdict

SpecPicks scored Donner DP-1 Guitar Power Supply 10 Isolated DC Output using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Donner's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How many pedals can the Donner DP-1 actually power?

Ten, via 10 isolated DC outputs: seven 9V 100mA, one 9V 500mA, one 12V 100mA, and one 18V 100mA. Ten power cables are included in the box.

Is the DP-1 truly isolated?

Not in the transformer sense. Donner states the DP-1 uses circuit simulation and circuit design on a switching supply to achieve an isolation effect, and that this does not mean absolute isolation in the circuit.

Can it run a digital delay or a multi-effects pedal?

Yes, on the dedicated 9V 500mA output. The other seven 9V taps are rated 100mA each, which suits analog overdrives, fuzzes, and tuners rather than current-hungry digital units.

Will it work outside the US?

The input accepts AC 100V-240V, so the supply itself covers international mains voltage. You may still need a plug adapter for your region - check the product listing for the included cable type.

What happens if one pedal or cable shorts out?

Independent short-circuit protection keeps the remaining outputs running when one output shorts, and the bright blue LED doubles as a short-circuit indicator so you can spot the fault.

Key Features

  • 10 ISOLATED OUTPUTS:Donner DP-1 9V Guitar Pedal Power Supply has 10 outputs ,which includes 7 ways 9V 100mA, 1 way 9V 500mA, 1 way 12V 100mA, 1 way 18V 100mA
  • NOISE REDUCTION CIRCUIT DESIGN：Donner Guitar Pedal Power Supply Quality is made of aluminum alloy material, which makes it light, and portable. It has a noise reduction function, low noise gives you a better experience, and direct current increases the stability of the power supply during use
  • SHORT CIRCUIT PROTECTION:Independent short-circuit protection, when one output is short-circuited, other outputs can still work
  • BLUE LED LIGHT FOR INDICATE：Bright blue LED for pedal board lighting and short circuit indicate
  • FIT FOR GUITAR EFFECTS：AC 100v-240V Input: DC 18V，Powers For 9V、12V or 18V PEDAL.Package includes 10pcs power cables.【Recently, Donner upgrade its logo. Due to the difference of production batches, the Donner logo on the product you received may be different】
  • Note: Donner uses circuit simulation technology and circuit design on the switching power supply to achieve the isolation effect of the independent power supply of the effector. However, it does not mean absolute isolation in the circuit.

Full Specifications

BrandDonner
ColorBlack
Amperage500 milliamps
MaterialAluminum
Unit Count1 Count
Form FactorCompact rectangular box
Model NumberAS2401A
Input Voltage240 volts
Maximum Power9 watts
Connector TypeBarrel Connector
Output Current5 A
Output Wattage9 watts
Item Dimensions6 x 2 x 72 inches
Mfr Part NumberDP-1
Enclosure MaterialAluminum
10 ISOLATED OUTPUTSDonner DP-1 9V Guitar Pedal Power Supply has 10 outputs ,which includes 7 ways 9V 100mA, 1 way 9V 500mA, 1 way 12V 100mA, 1 way 18V 100mA
SHORT CIRCUIT PROTECTIONIndependent short-circuit protection, when one output is short-circuited, other outputs can still work
Connector Type Used on CableBarrel Connector

Ready to buy?

Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $36.99

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal
$36.99
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