---
product_id: 45189408
title: "9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU"
brand: "maxinbuy power"
price: "€ 15.59"
currency: EUR
in_stock: true
url: https://www.desertcart.at/products/45189408-9v-850ma-ac-power-replacement-adapter-for-casio-ctk-4000
store_origin: AT
region: Austria
---

# 9V Output 850mA Current Overheat Protection 9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU

**Brand:** maxinbuy power
**Price:** € 15.59
**Availability:** ✅ In Stock

## Summary

> 🎹 Charge Your Creativity with Confidence!

## Quick Answers

- **What is this?** 9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU by maxinbuy power
- **How much does it cost?** € 15.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/45189408-9v-850ma-ac-power-replacement-adapter-for-casio-ctk-4000)

## Best For

- maxinbuy power enthusiasts

## Why This Product

- Trusted maxinbuy power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Global Ready:** Input voltage range of AC 100-240V for worldwide use.
- • **Safety First:** Equipped with over voltage and short circuit protection for peace of mind.
- • **Effortless Setup:** Easy plug-and-play with a US standard plug and barrel connector.
- • **Universal Compatibility:** Designed specifically for Casio CTK-4000, CTK-558, and CTK-700 keyboards.
- • **Power Up Your Performance:** High-quality AC wall charger for uninterrupted music creation.

## Overview

This 9V 850mA AC Power Replacement Adapter is the perfect power solution for your Casio CTK-4000, CTK-558, and CTK-700 keyboards. With a robust design featuring over voltage and short circuit protection, it ensures safe and reliable performance. Its universal input voltage capability makes it ideal for musicians on the go, while the US standard plug and barrel connector provide hassle-free connectivity.

## Description

9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU

## Features

- 9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU
- High Quality AC Wall Power Charger,Input Voltage : AC 100-240V Input Frequency : 50-60Hz
- Great for Casio 9V 850mA(or below)Replacement,US Standard Plug.Tip : Center(-)Outer(+)
- Note: Please make sure the DC output and tip size of ac adapter are accordant before you bid. Industry Quality : Over Voltage Protection, Over Heat Protection, CE
- Compatible with: Casio CTK-4000 CTK-558 CTK-700 Digital Electronic Keyboard

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Energy Specifications Met | CE |
| Current Rating | 0.5 Amps |
| Power Source | Corded Electric |
| Output Voltage | 9 Volts |
| Portable | No |
| Total Usb Ports | 1 |
| Wattage | 15 watts |
| Frequency Range | 60 hertz |
| Compatible Devices | Casio CTK-700 Digital Electronic Keyboard |
| Mount Type | Wall Mount |
| Connector Type Used on Cable | barrel connector |
| Input Voltage | 240 Volts |
| Main Power Connector Type | 2 Pin |
| Additional Features | Short Circuit Protection |

## Product Details

- **Brand:** Maxinbuy Power
- **Connector Type:** barrel connector
- **Compatible Devices:** Casio CTK-700 Digital Electronic Keyboard
- **Included Components:** AC adapter
- **Special Feature:** Short Circuit Protection
- **Input Voltage:** 240 Volts
- **Amperage:** 8.5E+2 Milliamps
- **Total USB Ports:** 1
- **Wattage:** 15 watts
- **Number of Items:** 1

## Images

![9V 850mA AC Power Replacement Adapter For Casio CTK-4000 CTK-558 CTK-700 Keyboard Wall Charger Power Supply Cord PSU - Image 1](https://m.media-amazon.com/images/I/81QbaQiCltL.jpg)

## Questions & Answers

**Q: Is this ul certified or a cheap china knock off?**
A: Yes, thanks I received all ready and work perfectly

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**Shop now:** [https://www.desertcart.at/products/45189408-9v-850ma-ac-power-replacement-adapter-for-casio-ctk-4000](https://www.desertcart.at/products/45189408-9v-850ma-ac-power-replacement-adapter-for-casio-ctk-4000)

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-04-22*