--- 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: "VT58378" currency: VUV in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.vu/products/677084389-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel store_origin: VU region: Vanuatu --- # Vintage 5725W tube + VU meter glow 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:** VT58378 **Availability:** βœ… In Stock ## Summary > 🎢 Elevate your audio game with vintage warmth and modern power β€” because your sound deserves the spotlight. ## 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?** VT58378 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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 - β€’ **Iconic Tube Warmth:** Authentic 5725W vacuum tubes paired with a vintage VU meter deliver rich, warm sound and a retro-modern vibe. - β€’ **Power Meets Precision:** 105W per channel drives your bookshelf speakers with room-filling clarity and dynamic range. - β€’ **Compact Command Center:** Sleek, metal chassis fits stylishly on any desk or shelf without sacrificing power or durability. - β€’ **Seamless Source Switching:** Bluetooth, USB, optical, coaxial, and RCA inputs cover every device in your digital and analog arsenal. - β€’ **Tailored Listening Experience:** Remote-controlled bass and treble adjustments plus replaceable tubes let you customize your perfect sound signature. ## Overview The Fosi Audio MC331 is a compact yet powerful 2-channel tube integrated amplifier featuring 105W per channel output, a built-in DAC, and versatile connectivity including Bluetooth, USB, optical, coaxial, and RCA inputs. Its vintage 5725W vacuum tubes and amber-lit VU meter combine classic tube warmth with modern design aesthetics. Designed for audiophiles and professionals alike, it offers remote-controlled tone adjustments and a robust metal build, making it a premium choice for HiFi bookshelf speakers and headphones. ## Description Product description Tube Integrated Amplifier All-in-One DAC Amp/Headphone Amp The MC331 supports one analog and four digital input modes, ensuring compatibility with a broad range of audio sources. It also boasts a pre-out port, facilitating easy setup of a 2.1 system. The VU meter and vacuum tubes add a touch of retro flair, delighting audio enthusiasts with both visual and auditory pleasure. Input: RCA, Bluetooth, USB, Optical, Coaxial Output: Passive Speakers Output, Pre-Out, 3.5mm Headphone Output SNRβ‰₯100dB; THD≀0.03%; Bluetooth Codecs: SBC, AAC Power Supply: 24V 4.5A Catering to Most Audio Sources Connect multiple audio sources simultaneously and switch inputs seamlessly. Maximize Space Efficiency Fits into your audio system effortlessly, offering high-quality audio with minimal space. Hybrid Tube Integrated Amplifier With a built-in DAC and versatile connectivity, MC331 offers rich, immersive sound. Pointer Dances to the Music Displays audio signal strength in real time to adjust volume and prevent overload. JAN 5725W Vacuum Tubes Compatible tubes: 5654W, 6AK5, 6AK5W, 6Zh1P, 6J1, 6J1P, WE-403A, 403B, EF95, and other 7-pin tubes. Bass and Treble Control Customize Your Unique Sound With central detents to easily restore the natural sound. Easy to Set up and Intuitive to Operate Allows for adjusting bass and treble from the comfort of your listening chair. Memory Function Setting automatically restore to previous upon restart, eliminating repetitive adjustments. CNC Integrated Design All-metal casing, finely sandblasted, featuring a minimalist and durable design. Friendly Solutions Guide 2. Optimize Setup & Audio Sources: -- Speaker Placement: Use high-resolution speakers placed at least 30cm away from walls or corners. Add rugs or curtains to reduce echoes. -- Audio Quality: Play lossless music formats (e.g., FLAC, WAV) on dedicated devices (e.g., music players or updated phones/computers). -- Bluetooth Compatibility: Ensure your device supports SBC and AAC Bluetooth formats. Keep the Bluetooth device within 10 meters of the amplifier and minimize obstacles. 3. Reduce Environmental Interference: - - Anti-Interference Cables: Use shielded RCA cables with grounding (metal-shell connectors) to minimize buzzing. -- Distance from Interference: Keep audio/Bluetooth cables β‰₯30cm away from routers, power outlets, or microwaves. -- Troubleshoot Sources: Test the same song on another phone/computer. If the noise persists, contact support for assistance. Quick Tips - Using a Turntable? Ensure it has a built-in phono preamp or connect an external one (required for proper volume). - Bluetooth Stability: Check if the antenna is securely installed and keep it away from other wireless devices (e.g., Wi-Fi routers). - Power Supply: Ensure you are using the correct power supply (24V 4.5A for 69W output; 24V 8.5A for maximum 105W output). - Warm-Up Time: Allow the vacuum tubes to warm up for 10-15 minutes after powering on to ensure stable performance. PS: Sampling Rate--USB: 24bit/96kHz; OPT/COA: 24bit/96kHz The volume is very low when connecting the turntable to the MC331. Do I need a turntable preamp? 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. The volume is very low when connecting the turntable to the MC331. Do I need a turntable preamp? 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: What is the purpose of the pre-out port on the MC331? 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: What is the purpose of the pre-out port on the MC331? 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. Can headphones and passive speakers play simultaneously? The MC331 defaults to headphone output priority. To use speaker output, you need to disconnect the headphones first. Can headphones and passive speakers play simultaneously? The MC331 defaults to headphone output priority. To use speaker output, you need to disconnect the headphones first. What tube models are compatible for replacement? 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. What tube models are compatible for replacement? 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. ## 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@4Ξ©, 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 | | Best Sellers Rank | #10,178 in Electronics ( See Top 100 in Electronics ) #43 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 | 4.3 out of 5 stars 385 Reviews | | 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/611aJMzhSPL.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/71FwibnGtxL.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/71QPCN6S3SL.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/716ZdyOshHL.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/71-PmY9FswL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***N on December 27, 2025* ### ⭐⭐⭐⭐⭐ Review *by G***L on February 10, 2026* ### ⭐⭐⭐⭐⭐ Review *by A***N on November 13, 2025* ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/677084389-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel](https://www.desertcart.vu/products/677084389-fosi-audio-mc331-tube-integrated-amplifier-with-dac-2-channel) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-06*