---
product_id: 677084389
title: "Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA"
brand: "fosi audio"
price: "$316.42"
currency: USD
in_stock: true
category: "Fosi Audio"
url: https://www.desertcart.us/products/677084389-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel
store_origin: US
region: United States of America
---

# Vintage 5725W vacuum tubes & VU meter Bluetooth + USB/Opt/Coax/RCA inputs 105W x2 power output Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA

**Brand:** fosi audio
**Price:** $316.42
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your audio game with vintage warmth and modern versatility!

## Quick Answers

- **What is this?** Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA by fosi audio
- **How much does it cost?** $316.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/677084389-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel)

## 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 Control:** Remote control lets you fine-tune bass and treble without leaving your seat.
- • **Power Meets Precision:** 105W per channel drives your bookshelf speakers with crystal-clear dynamics.
- • **Retro Vibes, Modern Sound:** Warmth of 5725W vacuum tubes paired with a vintage VU meter for that iconic tube amp glow.
- • **Seamless Source Switching:** Bluetooth, USB, optical, coaxial, and RCA inputs cover every device in your setup.
- • **Customizable Audio Signature:** Replaceable tubes let you tailor your sound, making every listening session uniquely yours.

## Overview

The Fosi Audio MC331 is a compact yet powerful tube integrated amplifier featuring 105W per channel output, a built-in DAC, and versatile connectivity options including Bluetooth, USB, optical, coaxial, and RCA. Its signature 5725W vacuum tubes and vintage VU meter combine classic aesthetics with warm, rich sound. Designed for audiophiles seeking both style and substance, it supports headphones and bookshelf speakers, with remote control and replaceable tubes for personalized audio experiences.

## Description

Buy Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- All-in-One DAC Amp: A DAC, amplifier, preamplifier, and headphone amplifier are all integrated into the Fosi Audio MC331. You can easily switch between audio sources with the help of the remote control, ensuring a seamless and enriched listening experience
- Amazing Combination: As an integrated tube DAC amp with a VU meter, the visual aesthetics of the 5725W vacuum tubes and VU meter add a nice warm and soft effect to not only the appearance but the sound as well, giving the modern look a retro feel
- Setup Flexibility: It supports Bluetooth, USB, coaxial, optical, and RCA inputs, making it compatible with a variety of sources such as computers, phones, CD players, turntables with built-in phono preamps, etc., allowing you to build various systems
- Compact Yet Powerful: The MC331 only takes up minimal desktop space but boasts a maximum power output of 105W x2@4Ω, effectively driving your bookshelf speakers. Additionally, it has a pre-out and a 3.5mm headphone output, making it versatile enough
- User-Friendly Design: The MC331 comes with a remote control, allowing you to adjust bass and treble from the comfort of your listening chair. Its replaceable tube design lets you customize the sound signature to suit your personal preferences( The tubes we currently use are the 5725W and 6J1, that shipped randomly and cannot be specified)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DM1VLXHN |
| Best Sellers Rank | #8,485 in Electronics ( See Top 100 in Electronics ) #34 in Audio Component Amplifiers |
| Brand | Fosi Audio |
| Built-In Media | MC331;Bluetooth Antenna;Vacuum Tube*2;Tube Cover*2; 24V4.5A Power Adapter;Remote |
| Customer Reviews | 4.4 4.4 out of 5 stars (428) |
| Item Weight | 4.2 Pounds |
| Manufacturer | Shenzhen Foresight Technology Co., Ltd. |
| Mfr Part Number | MC331 |
| Model Number | MC331 |
| Warranty Description | 24 Months Manufacturer |

## Product Details

- **Brand:** Fosi Audio
- **Item dimensions L x W x H:** 5.94 x 5.31 x 1.97 inches
- **Manufacturer:** Shenzhen Foresight Technology Co., Ltd.
- **Mounting Type:** Freestanding
- **Voltage:** 110 Volts (AC)

## Images

![Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA - Image 1](https://m.media-amazon.com/images/I/61uGM6A-SvL.jpg)
![Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA - Image 2](https://m.media-amazon.com/images/I/71Pj1waD+TL.jpg)
![Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA - Image 3](https://m.media-amazon.com/images/I/71JcVsy9qgL.jpg)
![Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA - Image 4](https://m.media-amazon.com/images/I/71Cjzmmb-XL.jpg)
![Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA - Image 5](https://m.media-amazon.com/images/I/71q5Ox6uVhL.jpg)

## Questions & Answers

**Q: The volume is very low when connecting the turntable to the MC331. Do I need a turntable preamp?**
A: If your turntable does not have a built-in preamp, you will need to add a separate phono preamp (such as the BOX series). If your turntable has a built-in preamp, make sure it's set to LINE mode to output the signal properly.

**Q: Q: What is the purpose of the pre-out port on the MC331?**
A: The MC331 has a pre-out port that can be connected to a powered subwoofer, speaker, or another amplifier with passive speakers for better sound quality.

**Q: Can headphones and passive speakers play simultaneously?**
A: The MC331 defaults to headphone output priority. To use speaker output, you need to disconnect the headphones first.

**Q: What tube models are compatible for replacement?**
A: The following tube models are compatible: EF95, 6AK5, 6AK5W, 403A/403B, 6J1, 6J1P, 6J2, 6J3, 6J4, 6J5, among others. You can test and choose based on your personal preference.

## Frequently Bought Together

- Fosi Audio MC331 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers/3.5mm Headphones, Vintage VU Meter Preamp with Bluetooth and USB/Opt/Coax/RCA
- Banana Plugs 2 Pairs / 4 pcs - Gold Plated Speaker Plugs for Mini HiFi Stereo Audio Receiver Amplifier for Home Bookshelf/Computer/Desktop Passive Speakers
- Amazon Basics Speaker Cable, Easy Assembly, 16-Gauge, Bronze, 100 ft

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-08*