---
product_id: 682274355
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: "2069 kr"
currency: DKK
in_stock: true
reviews_count: 9
category: "Fosi Audio"
url: https://www.desertcart.dk/products/682274355-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel
store_origin: DK
region: Denmark
---

# Vintage VU meter & 5654W vacuum tubes 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:** 2069 kr
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound 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?** 2069 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/682274355-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

- • **Vintage Vibes, Modern Sound:** Integrated 5654W vacuum tubes and a glowing VU meter combine retro aesthetics with warm, textured audio clarity.
- • **Pre-Out for Subwoofer Lovers:** Easily connect to active subwoofers via pre-out for deep, immersive bass that transforms your home audio setup.
- • **Powerhouse in a Compact Frame:** Delivers 105W per channel to effortlessly drive your bookshelf speakers without cluttering your desk.
- • **Tailored Listening Experience:** Adjust bass and treble remotely and swap tubes to customize your sound signature from the comfort of your chair.
- • **Seamless Multi-Source Connectivity:** Supports Bluetooth, USB, optical, coaxial, and RCA inputs for ultimate setup flexibility across all your devices.

## Overview

The Fosi Audio MC331 is a sleek, tube-integrated amplifier featuring a built-in DAC and multi-input support including Bluetooth, USB, optical, coaxial, and RCA. It delivers 105W per channel, perfect for driving bookshelf speakers, and includes a vintage-style VU meter and replaceable 5654W vacuum tubes for customizable warm sound. With remote-controlled bass/treble adjustments and a pre-out for active subwoofers, it blends retro charm with modern convenience, making it a top choice for audiophiles seeking rich, vocal-focused audio in a compact design.

## Description

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 : desertcart.in: Electronics

Review: Amazing Sound, Great Looks - The MC331 Tube Integrated Amplifier is a fantastic choice for music enthusiasts, especially those who appreciate vocal-driven tracks. This amplifier delivers a warm, textured sound signature that enhances the clarity and richness of vocals, making them feel natural and soothing. Whether you're listening to your favorite singers or enjoying acoustic sessions, the MC331 elevates the listening experience with its gentle yet detailed tonal delivery. The built-in DAC ensures crisp and accurate audio reproduction, perfectly complementing its tube amplifier's warm characteristics. Its two-channel stereo setup provides a balanced soundstage that feels immersive without overwhelming bass or treble. In terms of value for money, the MC331 stands out. Its combination of premium sound quality, solid build, and elegant design makes it a must-try for audiophiles on a budget. If you're someone who enjoys vocal-centric music or just appreciates refined audio performance, this amplifier is worth the investment.
Review: Just only one word to explain it - Fantabulous!!! - When I ordered this Integrated Amplifier, I guess I was the 1st person to Order as there were no reviews found. Meanwhile, when this product was shipped, I got to see a review with only 3 Star stating this Amp cannot be connected to a SubWoofer and that made me to feel skeptical, because my main requirement is to use this Amp for my Home PC with a 2.1 setup. Despite this low rating I decided to wait until the Amplifier gets delivered and hence waited patiently. And the day arrived, the first thing that I did was I connected this to my PC and tested all the inputs paired with my Pioneer Vintage Bookshelf speakers along with an Active Subwoofer wherein I connected the subwoofer to its LFE input. Initially, I was shocked to notice that my Subwoofer was silent and there was no BASS - you know I am a BASS lover, I enjoy songs and videos mostly for the deep BASS effects. However, I didn't loose my hope - I have multiple subwoofers, and most of them are custom made with Plate Amplifiers and luckily all my subwoofers are equipped with multiple inputs (RCA Line In, LFE and the Speaker In/Out). In my 2nd attempt to test the Sub I connected the Pre-out from this Amplifier to the 'Line-in' Input of my subwoofer - Oh Man it was a WoW Moment - It worked!! and what a deep bass it was really awesome. For those who says this cannot be connected to a Subwoofer, please note the 'Pre-Out' from this Amplifier is not throwing out any LFE signals, but a 'Stereo Output', which can be connected to another Stereo Amp to power Speaker-B or to an Active Subwoofer that has 'Line-In' RCA Port. At 100Hz this 'Pre-Out' works well with my Subwoofer and there are no flaws, but it might work with different Hz with other brand Subwoofers. I am not using this Integrated Amp with any Headphones, but with my Creative Sound Blaster X4, which supports multiple sampling rates. Pros: 1. All inputs are working fine, especially the Bluetooth is excellent. 2. It remembers the last used input and selects it when the Amp is turned on. 3. Highs and Mids are very clear, but for the Low Frequencies either use a nice Pair of bookshelf speakers or connect a Subwoofer. 4. It comes with a compact remote which is not the case in all the brands at this price range. 5. It looks very elegant and I love the 'Volume Unit Meter', it makes to feel it Vintage. 6. No distortions were observed even at high volume; thanks to the VU-Meter that helps to monitor the db level. 7. The Volume control also attenuates the 'Pre-Out' level, which is not found in all the Amplifiers and I have seen few amplifiers that controls only the Stereo and the Subwoofer works even there is no output from the Speakers. Cons: 1. There is no ventilation provided for the heat to dissipate like other models in this Brand. 2. There is no option to dim the 'VU-Meter' light, which glows very bright. 3. Would be great if the input power supply is given as 240V, instead of an external step-down Power Adaptor that limits the Wattage per Channel. 4. Should have included a HDMI port with ARC (saying this because it has a wonderful DAC inside). 5. Option for connecting a Passive Subwoofer isn't available, would be great if included. 6. Installing the Tubes was quite hard and little risky as there is chance for breaking - they should have installed it and modified the Packaging Box so that it becomes a plug and play device without any risks while doing the initial setup. 7. There are no indications on the volume level - there is no min/max level set in the Master Volume and hence I am setting the PC Volume to the minimum to avoid any damage to the connected speakers. Also there is no MUTE button included in the Amplifier. Despite having these much cons, I have rated this as 5 Stars because there is no option to mark it as 4.5 Overall experience is good and it exceeded my expectations that makes me to give this rating!!! I hope the readers found my review helpful. Thank You.

## 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 5654W 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DM1VLXHN |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #29,182 in Electronics ( See Top 100 in Electronics ) #28 in Hi-Fi Amplifiers |
| Brand | Fosi Audio |
| Country of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (289) |
| Date First Available | 14 November 2024 |
| Device interface - primary | Buttons, Microphone |
| Generic Name | Amplifier |
| Global Trade Identification Number | 00466597167685 |
| Importer | support@fosiaudio.com |
| Item Dimensions LxWxH | 15.1 x 13.5 x 5 Centimeters |
| Item Weight | 1 kg 810 g |
| Item dimensions L x W x H | 15.1 x 13.5 x 5 Centimeters |
| Item model number | MC331 |
| Manufacturer | Fosi Audio |
| Material | Glass |
| Model | MC331 |
| Mounting Hardware | MC331;Bluetooth Antenna;Vacuum Tube*2;Tube Cover*2; 24V4.5A Power Adapter;Remote |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Number of items | 1 |
| Output Power | 105 Watts |
| Package Type Name | Box |
| Packer | support@fosiaudio.com |
| Product Dimensions | 15.1 x 13.5 x 5 cm; 1.81 kg |
| Specification Met | General Performance Specifications |
| UPC | 466597167685 |
| Voltage | 110 Volts (AC) |
| Wireless Type | Bluetooth |

## Product Details

- **Brand:** Fosi Audio
- **Item dimensions L x W x H:** 15.1 x 13.5 x 5 Centimeters
- **Manufacturer:** Fosi Audio
- **Mounting Type:** Surface Mount
- **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/31iuU7TkBjL.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/41RU-BlC0TL.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/41qmXly4a+L.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/516RjuVF7pL.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/51lsBwOJUQL.jpg)

## Questions & Answers

**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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing Sound, Great Looks
*by K***B on 20 January 2025*

The MC331 Tube Integrated Amplifier is a fantastic choice for music enthusiasts, especially those who appreciate vocal-driven tracks. This amplifier delivers a warm, textured sound signature that enhances the clarity and richness of vocals, making them feel natural and soothing. Whether you're listening to your favorite singers or enjoying acoustic sessions, the MC331 elevates the listening experience with its gentle yet detailed tonal delivery. The built-in DAC ensures crisp and accurate audio reproduction, perfectly complementing its tube amplifier's warm characteristics. Its two-channel stereo setup provides a balanced soundstage that feels immersive without overwhelming bass or treble. In terms of value for money, the MC331 stands out. Its combination of premium sound quality, solid build, and elegant design makes it a must-try for audiophiles on a budget. If you're someone who enjoys vocal-centric music or just appreciates refined audio performance, this amplifier is worth the investment.

### ⭐⭐⭐⭐⭐ Just only one word to explain it - Fantabulous!!!
*by N***M on 30 December 2024*

When I ordered this Integrated Amplifier, I guess I was the 1st person to Order as there were no reviews found. Meanwhile, when this product was shipped, I got to see a review with only 3 Star stating this Amp cannot be connected to a SubWoofer and that made me to feel skeptical, because my main requirement is to use this Amp for my Home PC with a 2.1 setup. Despite this low rating I decided to wait until the Amplifier gets delivered and hence waited patiently. And the day arrived, the first thing that I did was I connected this to my PC and tested all the inputs paired with my Pioneer Vintage Bookshelf speakers along with an Active Subwoofer wherein I connected the subwoofer to its LFE input. Initially, I was shocked to notice that my Subwoofer was silent and there was no BASS - you know I am a BASS lover, I enjoy songs and videos mostly for the deep BASS effects. However, I didn't loose my hope - I have multiple subwoofers, and most of them are custom made with Plate Amplifiers and luckily all my subwoofers are equipped with multiple inputs (RCA Line In, LFE and the Speaker In/Out). In my 2nd attempt to test the Sub I connected the Pre-out from this Amplifier to the 'Line-in' Input of my subwoofer - Oh Man it was a WoW Moment - It worked!! and what a deep bass it was really awesome. For those who says this cannot be connected to a Subwoofer, please note the 'Pre-Out' from this Amplifier is not throwing out any LFE signals, but a 'Stereo Output', which can be connected to another Stereo Amp to power Speaker-B or to an Active Subwoofer that has 'Line-In' RCA Port. At 100Hz this 'Pre-Out' works well with my Subwoofer and there are no flaws, but it might work with different Hz with other brand Subwoofers. I am not using this Integrated Amp with any Headphones, but with my Creative Sound Blaster X4, which supports multiple sampling rates. Pros: 1. All inputs are working fine, especially the Bluetooth is excellent. 2. It remembers the last used input and selects it when the Amp is turned on. 3. Highs and Mids are very clear, but for the Low Frequencies either use a nice Pair of bookshelf speakers or connect a Subwoofer. 4. It comes with a compact remote which is not the case in all the brands at this price range. 5. It looks very elegant and I love the 'Volume Unit Meter', it makes to feel it Vintage. 6. No distortions were observed even at high volume; thanks to the VU-Meter that helps to monitor the db level. 7. The Volume control also attenuates the 'Pre-Out' level, which is not found in all the Amplifiers and I have seen few amplifiers that controls only the Stereo and the Subwoofer works even there is no output from the Speakers. Cons: 1. There is no ventilation provided for the heat to dissipate like other models in this Brand. 2. There is no option to dim the 'VU-Meter' light, which glows very bright. 3. Would be great if the input power supply is given as 240V, instead of an external step-down Power Adaptor that limits the Wattage per Channel. 4. Should have included a HDMI port with ARC (saying this because it has a wonderful DAC inside). 5. Option for connecting a Passive Subwoofer isn't available, would be great if included. 6. Installing the Tubes was quite hard and little risky as there is chance for breaking - they should have installed it and modified the Packaging Box so that it becomes a plug and play device without any risks while doing the initial setup. 7. There are no indications on the volume level - there is no min/max level set in the Master Volume and hence I am setting the PC Volume to the minimum to avoid any damage to the connected speakers. Also there is no MUTE button included in the Amplifier. Despite having these much cons, I have rated this as 5 Stars because there is no option to mark it as 4.5 Overall experience is good and it exceeded my expectations that makes me to give this rating!!! I hope the readers found my review helpful. Thank You.

### ⭐⭐⭐⭐ Why this product is frequently returned. Bcoz read 👇
*by S***S on 22 October 2025*

The tube amplifier produces a warmth sound signature where mid tones (vocals) are clear, sharp and upfront, base feels muddy even when we increase the bass knob there is no difference in tune. Functionality (treble and bass knob functionality is not that good won't vary that much),the base is muddy, treble is rolled off ( less sharp more pleasent type) Most of peoples like punchier bass, great vocals and sharp treble which fosi audio mc 331 doesn't provide hence everyone might return this. Who can keep this: those who love genre: jazz, blues, classical. ( Not for rap/hip hop) Ratings: Build quality: 5/5 Looks: 4/5 classy retro touch (the yellowish light in vu meter is high) Sound signature: ?/5 depends upon your taste, can be tuned if you vaccum tubes are available. Russian voskhod tubes are matched for hip-hop/rap genre. Connectivity: 4/5 bunch of inputs but no input for u-disk(pendrive)

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/682274355-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel](https://www.desertcart.dk/products/682274355-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-05*