STAGG Reverse polarity 9-volt 1A AC adapter

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STAGG Reverse polarity 9-volt 1A AC adapter for effect pedals

Name: STAGG Reverse polarity 9-volt 1A AC adapter for effect pedals - soundshop.ie
Brand: Stagg
SKU: PSU9V1AR
Price: 13.78 EUR
Availability: InStock

PSU-9V1AR-UK 9V Power Supply – Reliable UK Plug Adapter for Guitar Pedals & Audio Gear.

€16.95

In Stock in Ireland – Ships from our Drogheda Warehouse

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Same day despatch T&C's Apply

UK Shipping is Northern Ireland Only!

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+353 41 9831078

GTIN: 5414428177377 SKU: PSU9V1AR Categories: Guitars and Basses, Effects & Pedals Tags: stagg, 1 A, Effect Pedals, Reverse polarity, 9-volt, AC adapter Brand: Stagg

One of the premium brands we are proud to represent.

STAGG Reverse polarity 9-volt 1A AC adapter for effect pedals

STAGG Reverse polarity 9-volt 1A AC adapter for effect pedals. The PSU-9V1AR-UK is a compact and reliable 9V DC power supply designed for use with a wide range of guitar pedals, effects units, and audio equipment. Featuring a standard UK 3-pin plug and regulated 9V output, this adapter ensures stable performance and clean power delivery—ideal for musicians, producers, and engineers who demand consistency in their setups.

With a center-negative polarity and a 2.1mm barrel connector, the PSU-9V1AR-UK is compatible with most popular pedal brands including BOSS, MXR, Electro-Harmonix, TC Electronic, and many more. Its lightweight and compact design makes it perfect for home studios, live pedalboards, or mobile rigs.

Key Features:

Model: PSU-9V1AR-UK
Output: 9V DC regulated power supply
Connector: 2.1mm barrel plug (center-negative)
Plug type: UK 3-pin mains plug
Ideal for – guitar pedals, multi-effects units, and compatible audio gear
Reliable and noise-free – ensures consistent tone without interference

Whether you’re powering a single pedal or integrating into a larger setup, the PSU-9V1AR-UK offers a cost-effective, high-quality solution for uninterrupted performance.

Reverse Polarity? STAGG Reverse polarity 9-volt – 1A AC adapter for effect pedals

In the context of the PSU-9V1AR-UK power supply, “reverse polarity” refers to the orientation of the power plug’s electrical connections—specifically, where the positive (+) and negative (–) charges are located on the barrel connector.

Most guitar pedals and audio devices use a 2.1mm barrel connector with center-negative polarity, which means:

The outside (sleeve) of the plug is positive (+)
The center (tip) of the plug is negative (–)

This is called reverse polarity because it’s the opposite of many standard power adapters that use center-positive polarity (where the tip is + and the sleeve is –).

Why It Matters:

If you use a power supply with the wrong polarity, you can:

Damage your pedal or device
Cause it not to power on
Void warranties on some equipment

The PSU-9V1AR-UK is designed with center-negative polarity, making it compatible with the vast majority of guitar pedals, including popular brands like BOSS, MXR, TC Electronic, and Electro-Harmonix.

Tip:

Always check your pedal or device for a small diagram (⚫–⊖–⚪ or similar) near the power input that shows the required polarity. If it shows center-negative, the PSU-9V1AR-UK is the right choice.

Same Day Despatch*

Same Day Despatch T&C’s

Same day despatch is only available on orders placed Monday – Friday before noon. Orders placed on a Saturday & Sunday will be dispatched on Monday (except on a holiday weekend) Same Day Despatch is subject to stock and courier availability.

95% of our orders are delivered 1 day after Despatch date.

Please allow extra time at busy seasonal periods.*

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I Haven’t received my order! Please tell us ASAP

If you haven’t received your order within 48 Hours please check the address and Eircode you gave at the time of purchase was correct, then contact us on 00353 419831078 ASAP so we can resolve the delivery issue ASAP.

Parcel tracking

Click here for more information on Delivery rights

Our delivery charges are generally less than an post, the chart below is for guidance.

An Post Domestic Delivery Rates (Feb 2026 – For Guidance Only)

Weight not over	Letter/Postcard	Large Envelope	Packet	Parcel
100g	€1.85	€3.50	€4.40	€9.00
250g		€3.50	€5.50	€9.00
500g		€3.50	€7.00	€9.00
1kg			€9.00	€9.00
2kg			€9.00	€9.00
2.5kg				€11.00
5kg				€11.00
10kg				€13.00
20kg				€16.00

Returns Policy

Please read our Returns Policy carefully before ordering through our online store.

Cancellation before dispatch. Our aim is to package and dispatch the goods within 1 to 3 working days of receiving an order. If you wish to cancel an order within this time frame please contact us by email from our contact page. If the goods have not been dispatched then we will cancel your order and refund the invoice value. Confirmation of this refund will be email to you. For orders that have been dispatched please follow our returns policy. If you refuse to accept the delivery we will charge you for the return postage cost to us.

Returning Unwanted Goods In accordance with the Distance Selling legislation. We are happy for you to return unwanted goods within 14 days from date of delivery so long as they are returned in an unused new condition with the original packaging and all manuals and accessories, cables, PSU’s (if applicable), the original invoice and a completed returns form. Please note it is the customer’s responsibility to ensure the goods are returned safely to us and the customer must pay postage costs.

Upon receiving the return goods we will issue a refund to your credit card/method of payment for the invoice value. To obtain a return form contact us by email at info@soundshop.ie. Please note there is no refund or exchange on Books or Sheet Music due to Copyright! Returning Faulty Goods If you discover the goods you have purchased to be faulty upon receiving, please contact us at once by email so we can resolve the issue as quickly as possible. All goods sold are covered by the standard manufactures warranty against faulty materials or poor workmanship.

The manufactures warranty will not cover damage due to misuse, accidental damage, wear and tear. Faulty goods must be returned with proof of purchase and returns form. We will endeavour to resolve the issue upon receipt of the faulty goods by either replacing the product with a new or equivalent model or a refund for the original invoice value to your credit card/method of payment.

Returns Step by Step Process:

1: Inform us that you wish to return the goods and clearly state the type of return in the email i.e. Refund or Faulty. We will send you a returns form by email.

2: Complete the returns form and print a copy to go along with the returning goods and place inside the returning box.

3: If at all possible use the original delivery box or obtain a new box (at your own expense). We would ask you not to write, label or tape the retail packaging when returning unwanted purchases. If this happens, it will influence your refund claim.

4: Make sure to firmly pad the returning goods to avoid damage in transit

5: Tape the box securely and clearly mark our return address on the outside of the box. If you are using the original box, please make sure to remove or unmark your delivery address.

6: Organise shipping for the returning goods and retain a receipt from the courier company as proof of postage, as unfortunately we will not be able to accept responsibility for packages lost in transit.

Return Address:

The Sound Shop, 11 East coast Business Park Matthews Lane, Drogheda. A92 XV26 Phone: (00)353 (0)41-9831078 FAX: (00)353 (0) 41-6849906 Should you need to contact us directly please email us at info@soundshop.ie

About Us

About the Sound Shop Drogheda (Ireland Ltd.) Est. 1968

The Sound Shop was established in 1968 by Tommy Leddy and Sean McEvoy, Tommy and Sean had being hiring PA equipment for some time from their homes and seeing there was a gap in the market for musical equipment and instruments they went on to open their first shop in 14 North Quay Drogheda, and so the Sound Shop was born.

The business grew quickly so it wasn’t long before a much larger premises was needed and just a few doors away from the original shop stood Mayoralty House a historic building with charm that became the home of music in Ireland for the next 37 years, With the success of the business and rise in popularity of out of town shopping the Sound Shop needed to be part of this movement so the decision was made to finally leave North Quay and built a brand new 12,000 sq ft mega store along with a 900 seat theater the TLT where both business still reside today 2023.

Ireland’s Favourite Music Store! The Sound Shop in Drogheda Co. Louth has been supplying musicians, both beginners and professionals from all over Ireland for more than 57 years. Come visit our 12,000 sq ft mega store, Ireland’s biggest and best!!