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Description
Fosi Audio MC351 2.1-Channel Bluetooth DAC Amplifier for Speakers & Subwoofers
High-Performance 2.1 Channel Integrated Amplifier
The Fosi Audio MC351 is a high-quality 2.1-channel DAC amplifier designed to deliver immersive audio with powerful performance. With a built-in digital-to-analog converter (DAC) and multiple input options, it supports a variety of audio setups, including home theater, turntables, and HiFi stereo systems. The stylish VU meter enhances the listening experience by providing a visual representation of your music.
All-in-One DAC & Power Amplifier
Designed to meet the needs of audiophiles, the MC351 combines high-resolution audio decoding and amplification in one device. It supports five input modes—Bluetooth, RCA, Optical, Coaxial, and USB—offering seamless connectivity with your favorite audio sources. Whether you're upgrading your home audio setup or creating a HiFi listening space, this amplifier is built for versatility.
Key Features:
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Powerful HiFi Audio Output: 165W x 2 + 350W @ 4Ω, driven by dual TPA3255 Class-D amp chips for superior sound quality.
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Premium Sound Customization: Bass & treble knobs with central detents allow fine-tuning for a balanced and natural sound.
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5 Flexible Inputs: Supports Bluetooth, RCA, Coaxial, Optical, and USB, making it compatible with various devices including smartphones, TVs, PCs, and turntables.
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Multiple Outputs for 2.1 Setup: Connect passive speakers, a subwoofer, or use the pre-out for added flexibility.
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Retro VU Meter: Adds a vintage touch, visually responding to music dynamics for a nostalgic and engaging experience.
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Automatic Standby Mode: Saves power by entering standby after 2 minutes of inactivity.
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High-End Build Quality: CNC-machined all-aluminum alloy chassis with a finely sandblasted metal finish for durability and aesthetics.
Seamless Audio Performance & Versatile Applications
The MC351 ensures a high-fidelity listening experience with a signal-to-noise ratio (SNR) of ≥100dB and low total harmonic distortion (THD ≤0.03%). The dual 4700μF capacitors enhance stability, dynamics, and longevity, making it a reliable choice for audiophiles and home audio enthusiasts.
Ideal for Multiple Audio Setups:
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Wireless Streaming: Smartphone + MC351 (Bluetooth Input) + Passive Speakers
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Home Theater System: TV + MC351 (Optical/Coaxial Input) + Passive Speakers + Subwoofer
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PC Audio Upgrade: Computer + MC351 (USB Input) + Passive Speakers
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Classic Vinyl Experience: Turntable + MC351 (RCA Input) + Passive Speakers
With its one-click mode switching, enhanced heat dissipation, and premium components, the Fosi Audio MC351 offers the perfect blend of power, versatility, and style. Experience high-quality sound with a touch of vintage charm today!
Output Power:
165W x 2 + 350W @ 4Ω
Terminating Impedance: 4-8Ω
Input Mode: Bluetooth 5.3+RCA+COA+OPT+USB
Output Mode: SPK OUT+SUB OUT+3.5mm PRE OUT
Frequency Range: 20Hz - 20KHz(±0.1dB)
THD: ≤0.03%
SNR: ≥100dB
Device Dimension: 13.82 x 9.21 x 3.62 inches
DC Input Range: 24-48V
Sampling Rate: USB24bit/96kHz ; OPT/COA 32bit/192kHz
Power Supply: 32V/5A
In The Box
MC351 Power Amplifier x 1
32V/5A Power Adapter x 1
User’s Manual x 1
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.
Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.
Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.
At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.
Small but powerful. Output.enough for two large speakers. Minimum impedence. Less disturbance.
Apt budget amplifier for small to mid size room. Would recommend strongly. Build and performance good. Negative side is absence of remote.
Package was very good
Fosi Audio MC351 2.1-Channel Bluetooth Power Amplifier With DAC For Speakers & Subwoofers
After searching internet found this dac which has multiple input options and support 165*2 watts passive speakers and 350 watt passive subwoofer for future extension, tested with all input modes, bluetooth input feels a bit of low quality as it only supports sbc and aac codecs only, however if you want to use mobile via wired, alternative options 1. connect using Portronics Bridge Y USB 3.0 to Type C OTG Adaptor via USB A. 2. Use audiocular d08 cs-pro usb-c to 3.5 mm and 3.5 mm to rca input (cable creation brand). Optical input mode supports PCM (loss less stereo output) and Digital compress audio multichannel only) these are specific to Sony X-80J 65 inch
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 50K+ MUSIC ENTHUSIASTS
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from 6798 reviews
These are great, every element of a song is well balanced. However, that balance is a double-edged sword, as it lacks bass. So, if you're looking for a strong base signature, you might want to choose something else or use an equalizer, which is what i'm doing.
This is a solid cable, which delivers stunning sound. I use this cable to connect my Hifiman EF400 to Fiio K15. This is a major upgrade to the sound (as compared to the two standalone).
I bought Cadenza as my first IEMs, before buying these I researched a lot about every kind in this budget I could go for, I streched and bought these as something which sounds, harmonious, smooth and comfortable for long sessions, even then the details and the sound still puts me in awe beating any earbuds and in ear sound system I have ever tried.
One of the best IEM.
EarAcoustic STA-Hi End Series IEM is too warmform me which is my sound signature. Beryllium driver tuned so fantastic. When was received this never go off from my ears to 4 hrs. I have so many brands and so many chifi IEMs used but this EarAcoustic STA-Hi End Series IEM is totally blowned me away. That's why this EarAcoustic STA-Hi End Series IEM is highly recommended. Thanks once againMr Pritam Ji for suggesting me so wonderful IEM in audio library collection.
The product came with all the accessories it should have, the box wasn't damaged at all and delivery was quick. It only took 2 days to be delivered and came with good enough packaging.
Overall, Very satisfied by theaudiostore. While this was my first time buying from them, It definitely won't be the last.
When I was a kid, somewhere around 2005–2007, I was gifted a Sony cassette Walkman. I was too young to care about model numbers or sound signatures. I just knew that pressing play felt important. That Walkman is gone now. Probably sacrificed to the great black hole where old chargers, socks, and childhood joy go to die. But the want never left.
So years later, I did what any emotionally stable adult does. I bought a Walkman again. This time, the Sony NW-A306. And no, this is not nostalgia cosplay. This is something else.
-> A Small Device With Strong Opinions:
The NW-A306 looks like a cute mini smartphone that went on a digital detox retreat. No camera. No speaker. No SIM. No “bro just one notification”. It exists only for music and has zero interest in your productivity apps or reels.
Physically, it feels solid and intentional. Buttons still exist. Sony clearly assumes you might listen to music without staring at a screen like it owes you money.
-> Android, But With Discipline:
It runs Android 14 and yes, streaming apps work. YouTube, YouTube Music, Spotify, Apple Music, Tidal, ... etc all fine. But here’s the thing, you can choose how modern you want it to be.
With Google services running, I casually listened for about 6 to 7 hours and still stayed under 60 percent battery usage. That’s respectable. Disable Google services and background nonsense, and suddenly the battery life becomes “arre yeh toh chale hi ja raha hai” level good.
Sony didn’t brute-force anything. This device feels tuned, not overpowered.
-> Sound - Sony Being Sony:
Let’s clear this upfront. Walkman is the legacy on which the iPod later thrived. Apple polished the idea. Sony invented the feeling.
And yes, it is Sony, so bass exists. No question about that.
The bass here is not the shaadi DJ type that enters before the song does. It is controlled, confident, and supportive. With KZ ZAS and Sony XM4s, the sound is clean, warm when needed, detailed when it matters, and never tiring.
As a USB DAC, this thing is frankly ridiculous for its size. Plug it into a PC and it behaves like a serious audio device pretending to be small for fun. Stable, clean, no tantrums.
This is not five-minute wow sound. This is “ab bas ek album aur” sound.
-> Local Music and the Joy of Making Things Difficult:
Now comes the part streaming apps will not like.
Yes, we have everything. Spotify, Apple Music, Tidal, Amazon, Qobuz, YouTube. Music is everywhere. And somehow, nothing sticks.
Algorithms keep suggesting. You keep skipping. Half the time you don’t even remember what you listened to two hours ago. Music becomes vibe. Background. White noise with feelings.
Owning music changes behaviour.
Ripping CDs into FLAC, fixing metadata, web scraping album art, organizing albums. This is effort. And effort creates attention. You listen to albums. You read lyrics. You notice production. You sit still.
Sony Music Center on Windows actually helps instead of testing your patience. Metadata, album art, even 12-tone analysis. Organizing music feels intentional, not like punishment for liking files.
The NW-A306 makes music feel yours. Not rented. Not borrowed. Yours.
Ironically, it uses modern tech to make things slightly complicated on purpose, so listening becomes simple again.
-> So Why Does This Exist?
The NW-A306 is not trying to replace your phone. It is reminding you why music once deserved its own device.
It is focused. It is disciplined. It does not beg for attention. And that is rare now.
If you treat music as something to truly listen to and not just something playing while you scroll, this Walkman makes complete sense. Emotionally. Practically. Logically.
Also, it feels really good to own your music again. Like, irrationally good.
Some loops are worth closing.
i was scared what if i will get scammed, or will the put stone in the box ,
but nothing happened like that, best unboxing experience, do take video, as its mentioned in the package either,
product 10/10
the only issue the extra included case has no guide how to put earbuds in it and as i am an idiot i inserted it wrong took 45 minutes reinserted, fites to tight,
if you are stuck just like me - [****] email me i will help,
best audio , ANC is decent, call good, battery decent, overall excellent package, didnt find in ear detection, or find my earbuds only thing which arnt deal breakers
Amazing product and quick delivery.
There is no hissing sound with Kefine Klean iem
It's really a good beginner iem who qre comes into the iem first time
From perspective the wide bore tips were very flat in term of eq, normal bore and silicon tips performanced the best
Alleviated my qualms about wax entering the vents of the softears volume s.
Would recommend, works as advertised.
I picked up the Xenns Tea Pro from The Audio Store a couple of months ago, and after using them daily, I feel ready to share my thoughts.
First off, huge shoutout to The Audio Store team in Pune. The buying experience was smooth, and they were super helpful with my queries. It’s always reassuring to buy from folks who actually understand the gear they sell.
As for the Tea Pros—they are special. I’ve had them for a while now, so the "new toy" excitement has settled, but I’m still reaching for them every single day. The fit is incredibly comfortable for my ears, even during long listening sessions.
Sound-wise, they have that magic "Tea" DNA but feel more evolved. The vocals are lush and front-and-center, which makes tracks feel intimate. The bass has a solid, authoritative punch without bleeding into the mids, and the treble is detailed but smooth—I’ve never felt any fatigue, even after hours of use. The soundstage is holographic; you can really pinpoint where every instrument is coming from.
If you’re on the fence, just go for it. They have been a fantastic upgrade for my setup.











