--- product_id: 682274355 title: "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: "S$348" currency: SGD in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.sg/products/682274355-mc331-tube-integrated-amplifier-with-dac-2-channel-home-audio store_origin: SG region: Singapore --- # Vintage 5654W vacuum tubes + VU meter Bluetooth + USB/Opt/Coax/RCA inputs 105W x2 power output 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:** S$348 **Availability:** ✅ In Stock ## Summary > 🎶 Vintage warmth meets modern power — your audio’s new best friend! ## Quick Answers - **What is this?** 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?** S$348 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/682274355-mc331-tube-integrated-amplifier-with-dac-2-channel-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 - • **Versatile Listening Modes:** Switch effortlessly between headphones, passive speakers, and even add a subwoofer via pre-out for a full 2.1 experience. - • **Powerhouse in a Compact Frame:** Delivers 105W per channel to effortlessly drive your bookshelf speakers without cluttering your desk. - • **Tailored Sound at Your Fingertips:** Remote-controlled bass and treble adjustments plus replaceable tubes let you customize your sonic signature from your seat. - • **Seamless Multi-Source Connectivity:** Supports Bluetooth, USB-C, optical, coaxial, and RCA inputs for ultimate setup flexibility across all your devices. - • **Warm Vintage Vibes, Modern Precision:** Authentic tube sound with glowing 5654W vacuum tubes and a retro VU meter that elevates both audio and aesthetics. ## Overview The Fosi Audio MC331 is a compact yet powerful tube integrated amplifier featuring 105W x2 output, multi-input DAC support (Bluetooth, USB-C, optical, coaxial, RCA), and a vintage-inspired VU meter with 5654W vacuum tubes. Designed for audiophiles craving warm, rich sound with modern connectivity, it includes remote bass/treble control and versatile headphone and speaker outputs, making it a perfect centerpiece for any HiFi bookshelf setup. ## 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: Best budget PreAmp Tube based Amplifier especially for Windows PC users - A must have amplifier for anyone who wants to enjoy clean, warm & colorful music. Very good build quality. It has thick aluminium body & the tubes have an outer glass protection which protects it from accidental touch which may loosen it or can very minutely burn our hands as it can become hot if keep it ON continuously for a day or two. Pros:- 1)It is a tube (PreAmp) based amplifier which gives clean, warm & colorful music. 2)It is multipurpose amplifier as we can connect a headphone, passive speakers & active speakers with it. We can also add a sub-woofer using the pre-out port making it a 2.1 speaker system amplifier. 3)It has multiple inputs like USB-C, RCA, COAX & Optical. If you want to connect passive speakers, use the BANANA port & if you want to connect an active speaker, then RCA cable of the speakers which have a single 3.5mm jack should be connected to pre-out port. Cons:- 1) Every time you switch it off from the mains, it will forget the last volume setting. Well this is actually not a Con but a safety system to ensure that if someone has set the volume to very high, next time when it is powered ON, it may damage the passive speakers. 2)Even though the manual says that USB-C supports 24bit 96Hz, on PC you will only get 16bit 48Hz due to its chip's plug & play limitations. 3)Some people said it's bass knob is useless & there is not enough bass for Rap-Hiphop but on my Windows PC setup, I have a free software Fxsound installed which inhances music. I am getting superb bass & treble on my headphones since I can control it through both Fxsound+Fosi bass treble knob. And is join it with my Edifier R1855DB active speakers, I get the extra bass treble control given on its back. Review: FOSI MC331 - Absolutely Worth It – A Little Beast of an Amp! - Absolutely Worth It – A Little Beast of an Amp! I’ve had my Panasonic VK 550 speakers (8 ohms, 120W) for over 22 years now. With a full Hi-Fi setup and a newer 3-way speaker system, I was planning to retire them. But a friend suggested, “Why not hook them up to your PC using a small desktop amp like a Fosi or Aiyima?” I was skeptical at first — these are power-hungry speakers and I didn’t want to spend more money just to experiment. But after testing a similar setup using my friend’s Aiyima amp, I was completely blown away. I immediately ordered the Fosi MC331 — and let me tell you, I’m 200% satisfied! 🔥 Pros: • Vintage charm meets modern clarity • The sound is crystal clear, rich, and well-defined • Once the tubes warm up, the audio transforms — giving you that warm, musical, analog touch you just don’t get from solid-state amps • Despite its compact size, this amp is an absolute beast — effortlessly driving my old VK 550s This little tube amp has brought my vintage speakers back to life in the most beautiful way. If you’re on the fence — go for it. You won’t regret it. 💯💯 ## 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.（Includes two-year warranty） ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DM1VLXHN | | Best Sellers Rank | #37,358 in Electronics ( See Top 100 in Electronics ) #45 in Hi-Fi Amplifiers | | Box Contents | MC331;Bluetooth Antenna;Vacuum Tube*2;Tube Cover*2; 24V4.5A Power Adapter;Remote | | Brand Name | Fosi Audio | | Country of Origin | China | | Customer Reviews | 4.2 4.2 out of 5 stars (515) | | Importer Contact Information | support@fosiaudio.com | | Item Type Name | Amplifier | | Item Weight Unit of Measure | 1.4 Pounds | | Manufacturer | Fosi Audio | | Manufacturer Part Number | MC331 | | Model Number | MC331 | | Number of Items | 1 | | Packer Contact Information | support@fosiaudio.com | | Warranty Description | 2 Year Manufacturer | ## 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 ![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/617dwqTY53L.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 ### ⭐⭐⭐⭐⭐ Best budget PreAmp Tube based Amplifier especially for Windows PC users *by A***N on 16 November 2025* A must have amplifier for anyone who wants to enjoy clean, warm & colorful music. Very good build quality. It has thick aluminium body & the tubes have an outer glass protection which protects it from accidental touch which may loosen it or can very minutely burn our hands as it can become hot if keep it ON continuously for a day or two. Pros:- 1)It is a tube (PreAmp) based amplifier which gives clean, warm & colorful music. 2)It is multipurpose amplifier as we can connect a headphone, passive speakers & active speakers with it. We can also add a sub-woofer using the pre-out port making it a 2.1 speaker system amplifier. 3)It has multiple inputs like USB-C, RCA, COAX & Optical. If you want to connect passive speakers, use the BANANA port & if you want to connect an active speaker, then RCA cable of the speakers which have a single 3.5mm jack should be connected to pre-out port. Cons:- 1) Every time you switch it off from the mains, it will forget the last volume setting. Well this is actually not a Con but a safety system to ensure that if someone has set the volume to very high, next time when it is powered ON, it may damage the passive speakers. 2)Even though the manual says that USB-C supports 24bit 96Hz, on PC you will only get 16bit 48Hz due to its chip's plug & play limitations. 3)Some people said it's bass knob is useless & there is not enough bass for Rap-Hiphop but on my Windows PC setup, I have a free software Fxsound installed which inhances music. I am getting superb bass & treble on my headphones since I can control it through both Fxsound+Fosi bass treble knob. And is join it with my Edifier R1855DB active speakers, I get the extra bass treble control given on its back. ### ⭐⭐⭐⭐⭐ FOSI MC331 - Absolutely Worth It – A Little Beast of an Amp! *by M***I on 2 August 2025* Absolutely Worth It – A Little Beast of an Amp! I’ve had my Panasonic VK 550 speakers (8 ohms, 120W) for over 22 years now. With a full Hi-Fi setup and a newer 3-way speaker system, I was planning to retire them. But a friend suggested, “Why not hook them up to your PC using a small desktop amp like a Fosi or Aiyima?” I was skeptical at first — these are power-hungry speakers and I didn’t want to spend more money just to experiment. But after testing a similar setup using my friend’s Aiyima amp, I was completely blown away. I immediately ordered the Fosi MC331 — and let me tell you, I’m 200% satisfied! 🔥 Pros: • Vintage charm meets modern clarity • The sound is crystal clear, rich, and well-defined • Once the tubes warm up, the audio transforms — giving you that warm, musical, analog touch you just don’t get from solid-state amps • Despite its compact size, this amp is an absolute beast — effortlessly driving my old VK 550s This little tube amp has brought my vintage speakers back to life in the most beautiful way. If you’re on the fence — go for it. You won’t regret it. 💯💯 ### ⭐⭐⭐⭐ Limited sampling rate for USB input but overall works well *by N***P on 28 December 2024* FIRST REVIEW [28 DEC 2024] [2 stars]: I’ve set this up at home on my desk, for casual music playback. I’ve connected a pair of Philips bookshelf speakers for two-channel playback. I primarily use the USB-C port on my MacBook Pro M1 Pro (Model Number: MKGP3HN/A) to connect the MC331. And occasionally use my iPhone 15 to play music via Bluetooth. When I connect the MC331 via the headphone jack, I can choose between several options up to 24-bit 96kHz formats for playback in the Midi setup app. But when I connect it via a USB-C cable, the options are limited to 48kHz and 16-bit. (See attached screenshot) Despite this discrepancy, the user manual states that the device can support up to 24-bit/96kHz playback over USB. (See attached screenshot) I purchased this device specifically for its advertised audio capabilities, and the fact that the amplifier is not functioning as advertised is unacceptable. Reached out to the OEM and they washed off hands saying the manual is incorrect. UPDATED REVIEW [15 JAN 2025] [4 Stars]: After using the amp for a month, here is my updated review. I have tried all other inputs and tested the features of the device and they perform on par with the claims. The 3.5mm and Optical inputs works very well and the sound quality is pretty good. Bluetooth range is also reasonable. Apart fromt the above mentioned shortcoming, I didn't find any other issues. And comparing to other features, I can overlook the limited sampling rate for USB input. And I think the feedback can be changed to 4 stars. ## 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.sg/products/682274355-mc331-tube-integrated-amplifier-with-dac-2-channel-home-audio](https://www.desertcart.sg/products/682274355-mc331-tube-integrated-amplifier-with-dac-2-channel-home-audio) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-11-11*