--- product_id: 677084389 title: "Fosi Audio MC331 Tube Amplifier with DAC, Bluetooth Stereo Amp for Speakers" brand: "fosi audio" price: "Β₯51443" currency: JPY in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.jp/products/677084389-fosi-audio-mc331-tube-amplifier-with-dac-bluetooth-stereo-amp store_origin: JP region: Japan --- # Bluetooth + USB/Opt/Coax/RCA inputs 105W x2 power output Vintage VU meter & tube preamp Fosi Audio MC331 Tube Amplifier with DAC, Bluetooth Stereo Amp for Speakers **Brand:** fosi audio **Price:** Β₯51443 **Availability:** βœ… In Stock ## Summary > 🎢 Elevate your sound game with vintage warmth and modern versatility! ## Quick Answers - **What is this?** Fosi Audio MC331 Tube Amplifier with DAC, Bluetooth Stereo Amp for Speakers by fosi audio - **How much does it cost?** Β₯51443 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/677084389-fosi-audio-mc331-tube-amplifier-with-dac-bluetooth-stereo-amp) ## 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€’ **Compact Control:** Remote control lets you fine-tune bass and treble without leaving your seat. - β€’ **Power Meets Precision:** 105W per channel drives your bookshelf speakers with crystal-clear authority. - β€’ **Retro Vibes, Modern Sound:** Vacuum tubes and a vintage VU meter deliver warm, rich tones with eye-catching style. - β€’ **Seamless Source Switching:** Bluetooth, USB, optical, coaxial, and RCA inputs cover every device in your audio arsenal. - β€’ **Customizable Audio Signature:** Replaceable tubes let you tailor your sound to match your unique listening mood. ## 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 including Bluetooth, USB, optical, coaxial, and RCA inputs. Its vintage VU meter and vacuum tubes provide warm, rich audio with customizable sound via replaceable tubes, all controllable remotely for a seamless, high-fidelity listening experience. ## Description Buy Fosi Audio MC331 Tube Amplifier with DAC, Bluetooth Stereo Amp for Speakers | Vintage VU Meter, 2-Channel HiFi Power Amp for Bookshelf Speakers and 3.5mm Headphones, USB/Optical/Coaxial/RCA Inputs: Amplifiers - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: LOOKS amazing! SOUNDS great!! Remote SUCKS! ha ha ha! HIGHLY Recommended!! - LOOKS amazing! SOUNDS great!! Remote SUCKS! ha ha ha! but then again, I am a bit impatient... This little amp is a joy to listen to! and play with! and look at! It looks so good: small, the VU meter moves a lot, the light is soft, it is a joy to look at, very elegant on the mantle. Sound is very nice; warm, detailed, voices come in as if the singer is there (listen to Norah Jones - Come Away With Me - 24bit/192kHz - Qobuz.com). I hooked up (from my Samsung S22 with Qobuz) an external DAC to it (SHANLING UA4, Moondrop Echo-B, or FiiO KA13 dongle amp) and my speakers Magnat 503's (which are very efficient at ~91) and got very good sound. It can get loud (loud enough to make the dog next door bark, and that furious little thing is ~100 ft away). But the sound quality stays very good and even at loud levels, very loud levels. I have other setups that are Class AB (Arcam SA10 with FiiO K13 R2R, and fed by the WiiM Pro AirPlay 2 Receiver, again via LAN cable and Qobuz). The difference is very minimal and I can tell only because the FiiO K13 R2R architecture leaves a mark on your ears/brain (that thing is so AWESOME!!! of all the entry-level DAC's I reviewed that one I kept. It is better, in my opinion, than ~$2k DAC's. Actually of all the DAC's I tested this one (FiiO K13 R2R) is the best sounding. You'll love Voila by Andre Rieu and Emma). Anyways!! I am getting this little amp for my sister for Christmas. She will not mind the remote latency at all, and she will be so happy at the way it looks. It looks very good, one of the most well designed aesthetics in the audio world. I am getting the "1Mii B06Ultra Bluetooth 5.2 Receiver" for her so she can listen to this thing via LDAC Bluetooth from her phone, as this little amp does not come with any worthwhile codec's. Back to the Fosi Audio MC331 - The REMOTE SUCKS: the remote takes two seconds to recognize you pressed the volume button on it (up or down), if and when it decides to recognize it. And you have to point it directly at the amp, the IR will not bounce off stuff like it does with other remotes. ALL the buttons have a darn-awful latency to them, even the selector. It can get infuriating after a while. I was working on a spreadsheet and wanted the sound just a little lower and instinctively picked up the remote and pressed the volume button, but it took forever to register so I had to take my mind off what I was working on to focus on "is this thing working!!??" It pisses you off after a while. And yes, some of the sound disappeared when I turned it very low (almost silent); and no, "that is expected, dufus!" because I get that, but on the other systems at that very low level ALL the sound comes across-the-board at very low volume, not just some of it. Highly recommended! Just fix the remote Fosi!! :-) :-) another little thing... it will not work with a higher-end power supply. I tried another Fosi power supply on it and it will not even turn on, so you are stuck with the power supply it comes with. Not a problem, but in case you were wondering "what if..." you added a better power supply?? No, it will not work. You are stuck with the 24V it comes with. Review: Awesome! - I really like this amplifier! The combination of the vintage-style tubes and modern design looks fantastic, and it adds a unique touch to my audio setup. More importantly, it sounds great! The audio is clear, detailed, and enjoyable to listen to, with a nice overall sound that makes music feel rich and engaging. I also love having the DAC and amplifier combined into one unit, which keeps my setup clean and simple without needing a bunch of separate components. Its compact size is another plus, making it easy to fit on a desk or entertainment center without taking up too much space. Between the sound quality, the classic tube aesthetic, and the modern connectivity, it’s a great little piece of audio equipment. Overall, I’m really happy with it and would recommend it to anyone looking to build a nice home audio setup without going overboard on equipment. ## 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 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 | #10,538 in Electronics ( See Top 100 in Electronics ) #39 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 out of 5 stars 521 Reviews | | Item Highlight | Vintage VU Meter, 2-Channel HiFi Power Amp for Bookshelf Speakers and 3.5mm Headphones, USB/Optical/Coaxial/RCA Inputs | | Item Weight | 1.4 pounds | | Manufacturer | Shenzhen Foresight Technology Co., Ltd. | | Mfr Part Number | MC331 | | Model Number | MC331 | | Number of Items | 1 | | 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 Amplifier with DAC, Bluetooth Stereo Amp for Speakers - Image 1](https://m.media-amazon.com/images/I/61uGM6A-SvL.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 ### ⭐⭐⭐⭐⭐ LOOKS amazing! SOUNDS great!! Remote SUCKS! ha ha ha! HIGHLY Recommended!! *by A***N on November 13, 2025* LOOKS amazing! SOUNDS great!! Remote SUCKS! ha ha ha! but then again, I am a bit impatient... This little amp is a joy to listen to! and play with! and look at! It looks so good: small, the VU meter moves a lot, the light is soft, it is a joy to look at, very elegant on the mantle. Sound is very nice; warm, detailed, voices come in as if the singer is there (listen to Norah Jones - Come Away With Me - 24bit/192kHz - Qobuz.com). I hooked up (from my Samsung S22 with Qobuz) an external DAC to it (SHANLING UA4, Moondrop Echo-B, or FiiO KA13 dongle amp) and my speakers Magnat 503's (which are very efficient at ~91) and got very good sound. It can get loud (loud enough to make the dog next door bark, and that furious little thing is ~100 ft away). But the sound quality stays very good and even at loud levels, very loud levels. I have other setups that are Class AB (Arcam SA10 with FiiO K13 R2R, and fed by the WiiM Pro AirPlay 2 Receiver, again via LAN cable and Qobuz). The difference is very minimal and I can tell only because the FiiO K13 R2R architecture leaves a mark on your ears/brain (that thing is so AWESOME!!! of all the entry-level DAC's I reviewed that one I kept. It is better, in my opinion, than ~$2k DAC's. Actually of all the DAC's I tested this one (FiiO K13 R2R) is the best sounding. You'll love Voila by Andre Rieu and Emma). Anyways!! I am getting this little amp for my sister for Christmas. She will not mind the remote latency at all, and she will be so happy at the way it looks. It looks very good, one of the most well designed aesthetics in the audio world. I am getting the "1Mii B06Ultra Bluetooth 5.2 Receiver" for her so she can listen to this thing via LDAC Bluetooth from her phone, as this little amp does not come with any worthwhile codec's. Back to the Fosi Audio MC331 - The REMOTE SUCKS: the remote takes two seconds to recognize you pressed the volume button on it (up or down), if and when it decides to recognize it. And you have to point it directly at the amp, the IR will not bounce off stuff like it does with other remotes. ALL the buttons have a darn-awful latency to them, even the selector. It can get infuriating after a while. I was working on a spreadsheet and wanted the sound just a little lower and instinctively picked up the remote and pressed the volume button, but it took forever to register so I had to take my mind off what I was working on to focus on "is this thing working!!??" It pisses you off after a while. And yes, some of the sound disappeared when I turned it very low (almost silent); and no, "that is expected, dufus!" because I get that, but on the other systems at that very low level ALL the sound comes across-the-board at very low volume, not just some of it. Highly recommended! Just fix the remote Fosi!! :-) :-) another little thing... it will not work with a higher-end power supply. I tried another Fosi power supply on it and it will not even turn on, so you are stuck with the power supply it comes with. Not a problem, but in case you were wondering "what if..." you added a better power supply?? No, it will not work. You are stuck with the 24V it comes with. ### ⭐⭐⭐⭐⭐ Awesome! *by J***S on October 19, 2026* I really like this amplifier! The combination of the vintage-style tubes and modern design looks fantastic, and it adds a unique touch to my audio setup. More importantly, it sounds great! The audio is clear, detailed, and enjoyable to listen to, with a nice overall sound that makes music feel rich and engaging. I also love having the DAC and amplifier combined into one unit, which keeps my setup clean and simple without needing a bunch of separate components. Its compact size is another plus, making it easy to fit on a desk or entertainment center without taking up too much space. Between the sound quality, the classic tube aesthetic, and the modern connectivity, it’s a great little piece of audio equipment. Overall, I’m really happy with it and would recommend it to anyone looking to build a nice home audio setup without going overboard on equipment. ### ⭐⭐⭐⭐⭐ Amazing *by A***N on December 27, 2025* There are basically two categories of inexpensive audio equipment: "you get what you pay for" and "capable of embarrassing much more expensive equipment". I think Fosi has garnered the reputation at this point to run for president of the latter group. I love this amp. I'm a musician and high quality audio is important to me, so believe me when I say it sounds good. The warmth and quirks of the tubes is very audible. Play music through it before they're fully warmed up (and they do get quite warm) and the sound is harsh and lacking dynamic range. Give it a few minutes and the sound mellows out and the sound stage comes into its own. There's easily enough power to fill a room, and it's sounded full and detailed with every genre. I also really appreciate the style and build quality of this unit. Unlike many other products at this price point, the construction is entirely metal; and not foil-thin metal the flexes under minimal strain. It feels sturdy, thick, and has a decent weight. There's no plastic here (except for the shield on the vu meter and the protection tubes around the vacuum tubes, which I don't mind). Even the knobs on the front are metal, and feel very satisfying in the hand. The connections on the back are also solid, if a bit small and close together. I think banana plugs are pretty much a must on this unit, unless you want to spend 10 minutes "threading the needle". Out of the box, the tubes come separately and you attach them yourself, giving it a bit of a DIY feel. Maybe having to partially assemble the unit yourself heightens the emotional connection. It's not just plug-and-play; you actuay have to spend some time interacting with it before you can use it. The tubes are featured prominently, but the amp makes no obfuscation of the fact that it's a thoroughly modern piece of equipment. There's a minimalist aesthetic here that I appreciate, and it's pulled off much much better than the brands that try to go for a faux-vintage look. The volume knob is doubles as the input selector by pushing it and the power button by pushing and holding for a few seconds. Turning it on or off, either with the power button or the handy remote, the unit gives a satisfying click. The only other controls, the bass and treble knobs, are very functional. The dichromatic amber-on-black is visually pleasing, and the amber lighting around the tubes is actually tastefully done I think. Tubes naturally have a dim glow, but many units (especially cheap ones) feel the need to play this up by covering the tubes in LEDs that usually look tacky. Here, the subtle amber glow accentuates the tubes, I think, rather than obfuscates them. The VU meter is also just fun. I think that's about all I have to say. I'm gonna go back to listening now. ## 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.jp/products/677084389-fosi-audio-mc331-tube-amplifier-with-dac-bluetooth-stereo-amp](https://www.desertcart.jp/products/677084389-fosi-audio-mc331-tube-amplifier-with-dac-bluetooth-stereo-amp) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-24*