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Black rectangular 9V 2A 18W AC adapter with 5.5mm 2.1mm negative centre barrel plug and 6ft cable

BASEUS

BASEUS 9V 2A 18W AC adapter 5.5mm 2.1mm negative centre

SKU CH-V1XE-AG03Q

A 9 V 2 A 18 W AC adapter with a 5.5 mm × 2.1 mm centre-negative barrel jack and 100–240 V input for guitar effects pedals

  • Product typeAC Adapters
  • Powers Boss, Dunlop, DigiTech and other centre-negative pedals with a 9 V 2 A supply
  • Self-adapting output delivers only the current your pedal draws, up to 2 A maximum
  • Smart chip adds overload, over-voltage, over-temperature and short-circuit protection
  • Works worldwide on 100-240 V 50/60 Hz mains input
  • 6 ft cable with 5.5 mm × 2.1 mm barrel plug, also fits 2.5 mm inner diameter

Replacement pedal power supply

This 9V 2A 18W AC adapter replaces the original power supply for compatible effects pedals. The 6ft cable connects mains voltage from 100V to 240V at 50 or 60Hz. A self-adapting 5.5mm by 2.1mm barrel plug fits centre-negative pedals and also accepts a 2.5mm inner diameter. Intelligent circuitry delivers only the current the pedal draws up to the 2A maximum.

Suits most centre-negative pedals

Guitarists using Boss, Dunlop, Danelectro, DigiTech, Ditto, Electro Harmonix, TC Electronic or Zoom multi-effects units can power them from a single outlet. The adapter auto-scales from 750mA through 1.5A to the full 2A so lower-draw pedals run safely. Builders whose pedals require centre-positive polarity or a voltage other than 9V must choose a different supply.

Centre-negative 5.5mm x 2.1mm barrel

The output connector is the deciding specification. Polarity is negative centre, positive outer sleeve and the plug dimensions are 5.5mm outer by 2.1mm inner with a 2.5mm alternative. If the pedal label shows a different polarity or barrel size this adapter will not fit.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 74% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapters

Questions about this item

My pedal chain draws up to 1.5 A at 9 V — will this adapter supply that without overheating?

The adapter delivers up to 2 A and self-adjusts, so a 1.5 A load runs well within its 18 W rating and built-in overload and over-temperature cut-offs.

I still use a few Boss pedals with the standard 5.5 mm × 2.1 mm centre-negative jack — does the plug fit them directly?

Yes, the barrel connector is 5.5 mm outer by 2.1 mm inner with negative centre, matching the common Boss-style pedal input.

After plugging in, how can I confirm the adapter is delivering a clean 9 V to my board?

Measure the output with a multimeter; you should read 9 V DC with centre-negative polarity while the green LED on the adapter housing stays solid.

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