---
product_id: 549695750
title: "48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp"
brand: "fosi audio"
price: "R$1624"
currency: BRL
in_stock: true
reviews_count: 9
category: "Fosi Audio"
url: https://www.desertcart.com.br/products/549695750-48v-5a-power-adapter-supply-for-home-audio-bluetooth-stereo
store_origin: BR
region: Brazil
---

# 48V stable output 5A high current delivery Built-in safety protections 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp

**Brand:** fosi audio
**Price:** R$1624
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your passion with precision and protection!

## Quick Answers

- **What is this?** 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp by fosi audio
- **How much does it cost?** R$1624 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/549695750-48v-5a-power-adapter-supply-for-home-audio-bluetooth-stereo)

## Best For

- fosi audio enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Sleek, lightweight design fits effortlessly into any setup—home, office, or studio—without cramping your style or space.
- • **Safety First, Always:** Equipped with overcurrent and overvoltage protection to keep your investment safe and sound during marathon listening sessions.
- • **Amp Up Without Limits:** Supports up to 5A current, perfect for high-power Class D integrated amplifiers demanding reliable juice.
- • **Power Your Sound Like a Pro:** Delivers a rock-solid 48V output tailored for Fosi Audio amps, ensuring your audio gear performs at its peak.
- • **Built to Last, Built for You:** Crafted with premium materials for durability, so your audio experience stays uninterrupted and worry-free.

## Overview

The Fosi Audio 48V 5A Power Adapter is a premium, compact power supply designed specifically for Fosi Audio amplifiers like BT20A Pro and TB10D. It delivers a stable 48V output with up to 5A current, ensuring high-power applications run smoothly. Built with safety features including overcurrent and overvoltage protection, this adapter combines durability with portability, making it ideal for home, office, or industrial audio setups.

## Description

Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp : desertcart.in: Electronics

Review: D - Definitely improvement over 32V oem adapter comes alongwith......reading reviews i was bit confused but again changing mind i ordered & results were great.....yes fosi audio heat lil bit but that's ok but adapter being cool even after 4-5 hours use. Using QA 3020i with fosi audio....amazing no need to add subwoofer now.
Review: Product is good but no improvement - Only volume became louder but No improvement in sound by switching to this expensive power supply.the tone of the sound actuallyy feels dull now. Am using it with fosi 20d bt pro. Unlike posted on web,this power supply is not the right match. It's better to buy more efficient speakers.

## Features

- The 48V 5A power adapter supply is specifically designed for use with amplifiers and is ideal for providing reliable power to Fosi Audio amplifiers, such as BT20A Pro, TB10D, and V3 amplifiers.
- Provides a stable and reliable output voltage of 48V for powering your device. Capable of delivering up to 5A of current, making it suitable for high-power applications.
- Manufactured with high-quality materials, ensuring long-term durability and reliability.
- Incorporates several safety features, including overcurrent protection and overvoltage protection, to ensure safe operation.
- The compact and lightweight design allows for easy portability and uses in tight spaces. It can be used in a range of settings, including home, office, or industrial environments.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C2BQ4P8J |
| Audio Wattage | 240 Watts |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #223,447 in Electronics ( See Top 100 in Electronics ) #412 in Hi-Fi Amplifiers |
| Brand | Fosi Audio |
| Compatible Devices | Home Audio |
| Country of Origin | China |
| Customer Reviews | 4.6 4.6 out of 5 stars (387) |
| Date First Available | 15 July 2023 |
| Importer | support@fosiaudio.com |
| Item Dimensions LxWxH | 19.3 x 9 x 3.8 Centimeters |
| Item Weight | 790 g |
| Item model number | 48V |
| Manufacturer | fosiaudio |
| Model | 48V |
| Mounting Hardware | 1 Power Adapter |
| Mounting Type | Wall Mount |
| Net Quantity | 1 Count |
| Number of Ports | 1 |
| Packer | support@fosiaudio.com |
| Power Source | Corded Electric |
| Product Dimensions | 19.3 x 8.99 x 3.81 cm; 790 g |
| Special Features | Lightweight Design |
| Total USB ports | 1 |
| Tuner Technology | DAB |
| Voltage | 230 Volts |
| Wattage | 36 Watts |

## Product Details

- **Amperage:** 5 Amps
- **Brand:** Fosi Audio
- **Colour:** Black
- **Compatible Devices:** Home Audio
- **Included Components:** 1 Power Adapter
- **Output Voltage:** 48 Volts
- **Power Source:** Corded Electric
- **Special Feature:** Lightweight Design
- **Total USB Ports:** 1
- **Wattage:** 36 Watts

## Images

![48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp - Image 1](https://m.media-amazon.com/images/I/616FrVzTcqL.jpg)

## Questions & Answers

**Q: Will this work with Fosi Audio BL20A ?  Will it improve sound quality?**
A: Max voltage for the BL20A is 24V. This is the limit for the two TPA3116D2 chips, so I would not recommend a 32V power supply. Fosi Audio sells a 24V supply that might "improve" sound with respect to the amount headroom (large swings in volume) you can get without distortion but I doubt you could tell the difference at reasonable volumes.

**Q: What is better power supply to use for Fosi BL20a amp? 32v 5a or 24v 8a or 48v 5a?**
A: 48v

**Q: Bt30dpro is only rated to 36v5a does this supply really work for it? is there a 36/48v 10a version?**
A: I bought this power supply for the for the Fosi BT10D it will take up to a 48 volt power supply. My two other Fosi amps will only use a 32 volt power supply. So you must be careful to use the correct unit. Sadly I am not familiar with the BT30Dpro. If you go to the Fosi website they might have additional information. I am sorry I could not be more help.

**Q: did it improve bt20a pro quality? if yes which speaker type and watt do you use that make a difference?**
A: 48 V power supply improved sound with more clarity and wider soundstage. Speaker type is best at 8ohms.

## Customer Reviews

### ⭐⭐⭐⭐⭐ D
*by P***R on 3 October 2025*

Definitely improvement over 32V oem adapter comes alongwith......reading reviews i was bit confused but again changing mind i ordered & results were great.....yes fosi audio heat lil bit but that's ok but adapter being cool even after 4-5 hours use. Using QA 3020i with fosi audio....amazing no need to add subwoofer now.

### ⭐⭐⭐ Product is good but no improvement
*by A***R on 25 December 2024*

Only volume became louder but No improvement in sound by switching to this expensive power supply.the tone of the sound actuallyy feels dull now. Am using it with fosi 20d bt pro. Unlike posted on web,this power supply is not the right match. It's better to buy more efficient speakers.

### ⭐⭐ 48V 5amp not working
*by G***Y on 10 October 2024*

48v /5 amp And 32v /5 amp no deference

## Frequently Bought Together

- Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp
- Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier, 300W x2 Wireless Amp, TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Receiver with Bass Treble Control for Passive Speakers
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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-07*