---
product_id: 553223851
title: "Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp"
brand: "fosi audio"
price: "¥29134"
currency: JPY
in_stock: true
reviews_count: 5
category: "Fosi Audio"
url: https://www.desertcart.jp/products/553223851-fosi-audio-48v-5a-power-adapter-supply-for-home-audio
store_origin: JP
region: Japan
---

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

**Brand:** fosi audio
**Price:** ¥29134
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your audio game with power that never quits!

## Quick Answers

- **What is this?** Fosi Audio 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?** ¥29134 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/553223851-fosi-audio-48v-5a-power-adapter-supply-for-home-audio)

## 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 home or office audio setup without clutter.
- • **Safety First, Always:** Integrated overcurrent and overvoltage protection keeps your gear safe during marathon listening sessions.
- • **Amp Up Without Limits:** Delivers a robust 5A current, perfect for high-power audio setups demanding deep bass and crisp highs.
- • **Power Your Sound Like a Pro:** 48V stable voltage ensures your amplifier performs at peak clarity and power.
- • **Trusted Upgrade for Audiophiles:** Specifically engineered for Fosi Audio amps, transforming your sound experience with zero noise or distortion.

## Overview

The Fosi Audio 48V 5A Power Adapter is a compact, durable power supply designed to deliver stable 48V output and up to 5 amps of current, ideal for powering Fosi Audio amplifiers like BT20A Pro, TB10D, and V3. Featuring built-in safety protections and a lightweight form factor, it ensures reliable, distortion-free performance for home, office, or industrial audio setups.

## Description

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.

Review: ottimo - e cambiato tutto. molto più potenza e bassi più profondi
Review: Super upgrade voor Fosi versterker - Wat een verbetering t.o.v. de meegeleverde voedingsadapter. Klank stukken beter, meer vermogen van de versterker. Geen ruis of vervorming, kan ganse dag spelen zonder oververhit te raken. Had dit gelezen op een forum over Fosi versterkers en vergelijkbare toestellen. Klinkt even goed als mijn Denon en Yamaha nu. Echt een super aanrader, een upgrade om U tegen te zeggen en dit voor een prijsje. Top.

## 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 |
| Amperage | 5 Amps |
| Best Sellers Rank | #76,518 in Electronics ( See Top 100 in Electronics ) #609 in Audio & Video Adapters |
| Brand | Fosi Audio |
| Built-In Media | Cable |
| Color | Black |
| Colour | Black |
| Connector Type Used on Cable | 2-Pin |
| Connector type | 2-Pin |
| Customer Reviews | 4.5 out of 5 stars 454 Reviews |
| Enclosure Material | Plastic |
| Form Factor | Compact |
| Input Voltage | 48 Volts |
| Input voltage | 48 Volts |
| Item Dimensions | 19.3 x 9 x 3.8 centimeters |
| Item Weight | 0.79 Kilograms |
| Item weight | 0.79 Kilograms |
| Manufacturer | Fosi Audio |
| Material | Plastic |
| Maximum Power | 240 Watts |
| Mfr Part Number | 48V電源 |
| Model Number | 48V |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Current | 5 Amps |
| Output Voltage | 48 Volts |
| Output Wattage | 240 Watts |
| Specification Met | CE |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Fosi Audio
- **Colour:** Black
- **Connector type:** 2-Pin
- **Item weight:** 0.79 Kilograms
- **Material:** Plastic

## Images

![Fosi Audio 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/61w7UQ-tuxL.jpg)
![Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp - Image 2](https://m.media-amazon.com/images/I/61lbQrKvudL.jpg)
![Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp - Image 3](https://m.media-amazon.com/images/I/61UDkJ8kl2L.jpg)
![Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp - Image 4](https://m.media-amazon.com/images/I/71QDSFX1DbL.jpg)
![Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp - Image 5](https://m.media-amazon.com/images/I/71pxMpEaGlL.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

### ⭐⭐⭐⭐⭐ ottimo
*by T***T on 11 September 2026*

e cambiato tutto. molto più potenza e bassi più profondi

### ⭐⭐⭐⭐⭐ Super upgrade voor Fosi versterker
*by G***R on 10 December 2025*

Wat een verbetering t.o.v. de meegeleverde voedingsadapter. Klank stukken beter, meer vermogen van de versterker. Geen ruis of vervorming, kan ganse dag spelen zonder oververhit te raken. Had dit gelezen op een forum over Fosi versterkers en vergelijkbare toestellen. Klinkt even goed als mijn Denon en Yamaha nu. Echt een super aanrader, een upgrade om U tegen te zeggen en dit voor een prijsje. Top.

### ⭐⭐⭐⭐⭐ Excellent
*by J***T on 19 February 2026*

Yep a definite game changer for the v3

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-27*