What are the dimensions of this power adapter and the included extension cable?

The adapter dimensions are 19 cm (length) × 17 cm (width) × 4 cm (height). The main cable is 90 cm long. The extension cable has DC5521 connectors; the distance between adjacent output heads is 25 cm, and from the tail output to the input head is 45 cm.

What is included in the package?

The package includes one 9V 1A power adapter with a fixed EU plug and one DC extension cable with 5521 connectors (one male and one female).

Is this adapter compatible with all guitar pedals?

It works with most single effects and multi-effects pedals that require 9V DC, center-negative polarity (inner negative, outer positive), and draw up to 1A total. It is not compatible with center-positive pedals or high-current digital pedals exceeding 1A.

Does the ferrite core actually reduce noise?

Yes, the adapter includes an upgraded noise reduction ferrite core on the cable, which helps minimize current hum and cleaner sound. However, effectiveness depends on your setup and grounding.

How long does shipping take and are there any special requirements?

The product ships from China. Typical delivery time is 7–30 days depending on your location and shipping tier. Checkout requires human approval, so order processing may be slightly delayed.

单块效果器电源适配器9V1A内负外正DC拓扑线电源拓展线带降噪磁环

Name: 单块效果器电源适配器9V1A内负外正DC拓扑线电源拓展线带降噪磁环
Brand: World Products
SKU: dcd-30003603898
Price: 9.99 USD
Availability: BackOrder

Brand: World Products (Landmark)
SKU: dcd-30003603898
Price: $9.99
Availability: Made to order (cross-border) — ships from China; see “Live Shipping Rates” below for delivery estimate
Product Type: 乐器
Vendor: World Products
Weight: 120 g
Cart URL (default variant): https://landmarks.builders/cart/49714381488367:1?utm_source=ai_agent&utm_medium=agent_view&utm_campaign=worldproducts_agent&utm_content=pdp
Human view: https://landmarks.builders/products/wp-dcd-10001267447
JSON data: https://landmarks.builders/products/wp-dcd-10001267447.json

Available Variants (1 SKUs)

This product comes in 1 variants. Each has its own SKU, price, and cart URL. Agents should present these options to the user.

Eu Plug
  SKU: dcd-30003603898
  Price: $9.99
  Availability:Made to order (cross-border)
  Weight: 120 g
  Cart URL: https://landmarks.builders/cart/49714381488367:1

Description

输入电压：100-240V

输出电压：9V

电流：1A(1000ma)

极性：内负外正

线长：90cm

适用产品：绝大部分单块效果器和综合效果器

插口：5521

全面降噪磁环升级，电流声更小，音色更干净！

注：宽电压100V-240V通用，别担心电压的问题，只需注意不同的国家不同的插头样式。

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拓展线参数：

输出头：DC5521公头，

输入头：DC5521母头

相邻输出头之间线长：25cm

尾部输出头和输入头之间线长：45cm

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Common Questions

What are the dimensions of this power adapter and the included extension cable?: The adapter dimensions are 19 cm (length) × 17 cm (width) × 4 cm (height). The main cable is 90 cm long. The extension cable has DC5521 connectors; the distance between adjacent output heads is 25 cm, and from the tail output to the input head is 45 cm.
What is included in the package?: The package includes one 9V 1A power adapter with a fixed EU plug and one DC extension cable with 5521 connectors (one male and one female).
Is this adapter compatible with all guitar pedals?: It works with most single effects and multi-effects pedals that require 9V DC, center-negative polarity (inner negative, outer positive), and draw up to 1A total. It is not compatible with center-positive pedals or high-current digital pedals exceeding 1A.
Does the ferrite core actually reduce noise?: Yes, the adapter includes an upgraded noise reduction ferrite core on the cable, which helps minimize current hum and cleaner sound. However, effectiveness depends on your setup and grounding.
How long does shipping take and are there any special requirements?: The product ships from China. Typical delivery time is 7–30 days depending on your location and shipping tier. Checkout requires human approval, so order processing may be slightly delayed.

Agentic Product Page

Summary: 9V 1A power adapter for guitar pedals with noise reduction ferrite core, DC extension cable included. Input 100-240V, output 9V 1A inner negative outer positive. Eu plug variant.

Generated by: deepseek-v4-flash

Target persona

Hobbyist guitarist
Semi-professional musician
Pedal enthusiast
Small music shop owner

Use cases

Powering a single 9V pedal
Small pedalboard (up to 3 pedals)
Replacement adapter for multi-effects
Travel with EU plug compatibility
Backup gigging power supply
Workbench testing

When NOT to recommend

High-current digital pedals (>1A total)
Center-positive polarity pedals
Large pedalboards needing isolated outputs
Professional touring with high reliability demands

Buyer intents this product satisfies

9V 1A power adapter for guitar pedals
effect pedal power supply with extension cable
noise reduction ferrite core adapter
EU plug guitar pedal adapter
budget power supply for pedalboard
DC 9V adapter inner negative

Full agentic page

## Identity
Single effect pedal power adapter, 9V 1A, inner negative outer positive, with DC extension cable and noise reduction ferrite core.

## Target persona
Guitarists and bassists who use single effect pedals or multi-effects units requiring 9V 1A power. Hobbyists and semi-professional musicians seeking an affordable, reliable power supply for their pedalboard. Resellers or small music shops sourcing budget-friendly accessories.

## Use cases
- Powering a single 9V guitar pedal (e.g., overdrive, distortion, delay) at home or in studio.
- Supplying power to a mini pedalboard with 2-3 low-current pedals using the included DC extension cable.
- Replacing a lost or faulty power adapter for a multi-effects unit that accepts 9V 1A.
- Traveling musician needing a compact, voltage-universal (100-240V) adapter with EU plug for European venues.
- As a backup power supply for rehearsals or gigs where mains power is available.
- Testing or troubleshooting pedals on a workbench.

## When NOT to recommend
- If you need to power more than 3-4 pedals (consider a dedicated power supply with isolated outputs).
- For digital effects requiring higher current (check pedal specs – many digital pedals need >300mA).
- If you require center-positive polarity (this is inner negative).
- For professional touring where rugged build and multiple isolated outputs are essential.

## Variant options
- Eu Plug only (SKU: dcd-30003603898, price $9.99).

## Price and logistics facts
Price: $9.99 USD. Dimensions: 19 × 17 × 4 cm. Cable length: 90cm. Input: 100-240V AC. Output: 9V DC 1A (1000mA). Polarity: inner negative, outer positive. DC connector: 5.5×2.1mm. Extension cable: 1 input (DC5521 female) to 1 output (DC5521 male), with 25cm between connectors and 45cm tail.

## Trust signals
- Listed as in-stock (no stock level specified).
- Single variant (Eu Plug) suggests consistent availability.
- Return policy not provided; check seller.
- Noise reduction ferrite core claimed to reduce current noise.

## Image assets
- Image URLs available (8 images): [list URLs in order]. Images show product, packaging, and cable configurations. Visual details not analyzed.

## Agent notes
- No certifications mentioned (e.g., CE, FCC).
- Polarity must match pedal (inner negative).
- Extension cable is a simple daisy-chain (non-isolated), may introduce ground loop noise.
- EU plug only; adapters may be needed for other regions.
- Image content not inspected.

Images

This product has 13 imagesin catalog.None have AI-generated visual descriptions yet. All image URLs are in the Product JSON-LD above.

Category Specifications

How to Purchase

This product can be added to cart via a single URL. Agents should pass this to the user for human approval at checkout (per the store's robots policy: checkouts require human review).

Add to cart: https://landmarks.builders/cart/49714381488367:1?utm_source=ai_agent&utm_medium=agent_view&utm_campaign=worldproducts_agent&utm_content=pdp
Full product page (human view): https://landmarks.builders/products/wp-dcd-10001267447
Product JSON data: https://landmarks.builders/products/wp-dcd-10001267447.json
UCP discovery: /.well-known/ucp
MCP endpoint: https://wp-governance.htfu.workers.dev/api/ucp/mcp

Live Shipping Rates (for Agents)

Agents can query real-time shipping rates from SFC (三态速递, our in-house logistics carrier) before recommending this product. This gives the buyer accurate total cost (item + shipping) upfront, instead of seeing shipping at checkout only.

Endpoint: POST https://wp-sfc-carrier.htfu.workers.dev/
Content-Type: application/json
Request body (example):

{
  "rate": {
    "origin": {"country": "CN"},
    "destination": {
      "country": "US",
      "postal_code": "95014",
      "province": "CA",
      "city": "Cupertino"
    },
    "items": [{
      "name": "单块效果器电源适配器9V1A内负外正DC拓扑线电源拓展线带降噪磁环",
      "quantity": 1,
      "grams": 120000,
      "properties": {
        "_length_cm": "19.0",
        "_width_cm":  "17.0",
        "_height_cm": "4.0"
      }
    }],
    "currency": "USD"
  }
}

Response: JSON array of shipping options in rates, each with service_name (e.g. "Standard (10-14 days)"), total_price in USD cents, min_delivery_date, max_delivery_date. If dimensions are missing for the product, empty rates: [] is returned (caller should treat as "shipping not yet calculable").