Skip to main content
Donner DPA-1 9V DC 1A Power Supply Adapter for Keyboards & Guitar Pedals | Tip Negative AC Adapter with 5-Way Daisy Chain Cable for Effects Pedal, Digital Piano & MIDI Controller
Donner

Donner DPA-1 9V DC 1A Power Supply Adapter for Keyboards & Guitar Pedals

Bottom line: The Donner DPA-1 9V DC 1A Power Supply Adapter ($13.29 on Amazon as of 2026-10-06): 5-way daisy chain powers up to 5 pedals from one outlet; main trade-off: 1A total is shared across all 5 daisy-chained devices.

$13.29

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $13.29 Compare to similar audio & midi

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

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 5-way daisy chain powers up to 5 pedals from one outlet
  • ✓ 9V DC 1A (1000mA) output fits most standard effects pedals
  • ✓ Tip-negative polarity matches guitar pedal convention
  • ✓ Copper core cable with anti-hum structure to cut noise

Cons

  • ✗ 1A total is shared across all 5 daisy-chained devices
  • ✗ Tip-negative only, so center-positive gear is incompatible
  • ✗ Daisy chain is unisolated, so noisy pedals can bleed through
  • ✗ Fixed 9V output, no 12V or 18V pedal support

Manufacturer description

The Donner DPA-1 solves the two problems that plague any pedalboard or keyboard rig: not enough outlets and too much hum. This 9V DC adapter delivers 1A (1000mA) of tip-negative power, the standard polarity for guitar effects pedals, and ships with a 5-way daisy chain cable so one wall socket can feed up to five devices at once. Donner builds the cable around a copper core with an anti-hum structure, aimed at keeping noise out of your signal path when several pedals share a single supply. Beyond pedals, the DPA-1 is rated for electronic keyboards, digital pianos, and MIDI controllers, which…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored Donner DPA-1 9V DC 1A Power Supply Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the audio & midi category. Donner's audio & midi 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 audio & midi 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 DPA-1 power at once?

The included 5-way daisy chain cable connects up to 5 devices. Keep in mind the adapter's total output is 1A (1000mA), so add up your pedals' current draw and stay under that ceiling.

Is the DPA-1 tip negative or tip positive?

It is tip negative (-), the standard polarity for most guitar effects pedals. Do not use it with gear that requires center-positive power.

Will this work with my digital piano or MIDI controller?

Donner lists compatibility with electronic keyboards, digital pianos, MIDI controllers, and most guitar effect pedals. Confirm your device calls for 9V DC, tip negative, and 1A or less before connecting.

Does it cause hum or noise in the signal chain?

Donner uses a copper core cable and an anti-hum structure to reduce noise. Note that daisy chains share a common ground, so a digital pedal in the chain can still introduce noise that only an isolated supply fully eliminates.

Can I use the DPA-1 outside the US?

The input is rated AC100V-240V at 60Hz and draws 6.5W, so the voltage range covers most countries. You may still need a plug shape adapter, and check the listing for 50Hz mains compatibility.

Key Features

  • 【Power Supply for Different Devices】Compatible with electronic keyboards, digital pianos, MIDI controllers, and most guitar effect pedals. One adapter provides stable power for your essential music gear.
  • 【Power Up to 5 Devices at Once】Includes a 5-way daisy chain cable, allowing you to power multiple pedals or music devices at the same time. A simple and efficient solution for your setup.
  • 【Clean Sound Performance】Designed with high-quality copper core cable and anti-hum structure to reduce noise and keep your sound clean and stable.
  • 【Output Details】Output: 9V DC, 1A (1000mA), Tip Negative (-) design; Input: AC100V-240V, 60Hz, 6.5W. Reliable and consistent performance for daily practice or live use.
  • 【Reliable for Versatile Usage】Compact, durable, and easy to use. Ideal for guitar players, keyboard users, and musicians who need a dependable 9V power solution.

Full Specifications

BrandDonner
ColorBlack
CurrentDC
Wattage6.5 watts
Amperage1 A
Power PlugType A - 2 pin (North American)
Unit Count1 Count
Form FactorDaisy Chain
Model NumberDPA-1
Power Source100-240 V AC
Input Voltage240 volts
Mounting TypeTabletop Mount
Built-In MediaDaisy Chain, Power Adapter
Connector TypeDaisy Chain Connector
Output Current1 A
Output Voltage9 volts
Frequency Range60 hertz
Mfr Part NumberEC836
Number of Items1
Special FeatureDaisy Chain, Noise Isolation
Full listing titleDonner DPA-1 9V DC 1A Power Supply Adapter for Keyboards & Guitar Pedals | Tip Negative AC Adapter with 5-Way Daisy Chain Cable for Effects Pedal, Digital Piano & MIDI Controller

Ready to buy?

Donner DPA-1 9V DC 1A Power Supply Adapter for Keyboards & Guitar Pedals | Tip Negative AC Adapter with 5-Way Daisy Chain Cable for Effects Pedal, Digital Piano & MIDI Controller 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 — $13.29

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Related Audio & MIDI

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
Donner DPA-1 9V DC 1A Power Supply Adapter for Keyboards & Guitar Pedals | Tip Negative AC Adapter with 5-Way Daisy Chain Cable for Effects Pedal, Digital Piano & MIDI Controller
$13.29
View on Amazon →