TAS Commitment
Description
Fosi Audio K7 Gaming Desktop DAC & Headphone Amplifier
HiFi DAC Meets Gaming Power — All in One Compact Desktop Unit
The Fosi Audio K7 is a premium desktop DAC and headphone amplifier designed for both audiophile-grade music playback and immersive gaming. Equipped with a powerful internal architecture and versatile connectivity, the K7 delivers high-resolution audio, crystal-clear mic input, and ultra-low latency — making it ideal for music lovers, streamers, and pro gamers alike.
Key Features
🎧 Pure Music Enjoyment
Powered by the AKM4493SEQ DAC and XMOS XU208 USB processor, the K7 offers high-resolution decoding with ultra-low distortion (0.0002%). It brings out every detail in your music with incredible clarity, dynamic range, and minimal noise — delivering over 2.1W output power (balanced) to drive even demanding headphones.
🕹️ Immersive Gaming Audio
Designed to elevate your gaming, the K7 supports PC, PS5 Pro, PS5, Nintendo Switch, and more. Thanks to its precise sound localization and real-time sound effect handling, you’ll hear every footstep and gunshot exactly where it's meant to be — giving you a tactical advantage.
📡 Hi-Res Bluetooth with aptX HD
Equipped with Qualcomm QCC3031, it supports aptX HD, aptX LL, aptX, AAC, and SBC for CD-quality streaming with under 40ms latency. Perfect for seamless wireless music and gaming without lag.
🖥️ OLED Display + Intuitive Controls
The 1.5-inch OLED screen and tactile control interface make real-time monitoring and adjustments a breeze. Includes shortcut buttons, multifunction knobs, and a sleek angled ergonomic design for maximum usability.
🔧 Versatile Inputs & Outputs
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Inputs: USB-C, Optical, Coaxial, Bluetooth, 3.5mm Mic
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Outputs: RCA, 3.5mm Single-Ended, 4.4mm Balanced
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Mic Input: Intelligent noise-reduction ensures crystal-clear voice transmission, ideal for calls and game chat.
🛡️ Built to Last, Engineered to Perform
With a durable CNC-machined all-aluminium body, multiple LDO regulators, and a fully balanced internal circuit, the K7 ensures stable power delivery, reduced interference, and robust headphone protection.
🔍 Why Choose Fosi Audio K7?
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Best DAC Amp Combo under budget
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Gaming DAC with ultra-low latency & immersive spatial audio
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Audiophile-grade listening with crystal-clear resolution
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Ideal for PC, PS5, Switch & streaming
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Powerful output for high-impedance headphones (up to 300Ω)
DAC Chipset: XMOS XU208 + AKM4493SEQ + QCC3031 + TPA6120
Maximum Sampling Rate:
USB: PCM 384kHz/32bit, DSD256
Optical/Coaxial: PCM 192kHz/24bit
Bluetooth: PCM 48kHz/24bit
Bluetooth Version: 5.0
Bluetooth Codecs Supported: SBC, AAC, aptX, aptX HD, aptX LL
Bluetooth Range: ≤13 meters
Headphone Output Power:
3.5mm Single-Ended: ≥600mW + 600mW @32Ω
4.4mm Balanced: ≥2.1W + 2.1W @32Ω
Headphone Impedance Support: 16Ω – 300Ω
Outputs:
RCA
3.5mm Single-Ended
4.4mm Balanced
Inputs:
USB-C
Coaxial
Optical
Bluetooth
3.5mm Microphone
Microphone Input: 3.5mm with intelligent noise reduction
Noise Floor: ≤2.5μV
Display: 1.5-inch OLED high-definition screen
Firmware Upgrade: Supported via USB-C (XMOS firmware)
Power Supply: DC 12V / 2A
Compatible Operating Systems:
Windows 7, 8, 8.1, 10, 11 (driver required)
macOS, Linux (driver-free plug and play)
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.
Went thorough tons of online reviews for a purchase of Desktop DAC+AMP. FOSI K7 was kickstarter but reviews about it was fantastic.
Grabbed it without Blinking twice from TAS. As usual it was a next day delivery.
Fosi delivers crystal clear sound both on Headphones and IEM . Driving power of it crazy.
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 50K+ MUSIC ENTHUSIASTS
Let customers speak for us
from 6642 reviews
I am very satisfied with my purchase and currently enjoying hi-res audio with my iem. Best looking and build quality is also good under 1K
This is my first IEM. I like the way it sounds. Though I expected much better soundstage but it is good. After using this, I will definitely buy my second IEM. Trust The Audio Store, they delivered as expected. Actually someone suggested me on reddit to go with audio store and I will definitely recommend others the same.
Just got some time with these and here's my honest take:
Comfort: These things are stupid comfortable. Lightweight shells that disappear in your ears, zero fatigue even after long sessions. Stock tips are meh though—nothing special, you'll probably want to tip-roll.
Sound:
- Vocals are pushed forward and warm with less sparkle/energy up top. Great for that intimate, smooth vocal presentation but not if you want bright, analytical vocals
- Bass is elevated and textured but definitely not basshead levels. Hip-hop/EDM heads will find it lacking
- Treble rolls off early = excellent sibilance control. Zero harshness or fatigue, perfect if you're treble-sensitive
Who's this for? Warm vocal lovers and anyone tired of harsh, sibilant treble. Long listening session champs.
Who should skip? Bassheads, treble sparkle chasers, people wanting analytical/reference sound.
For the price, these carve out a nice niche—they're not trying to do everything, just warm and smooth really well. Worth it if that's your vibe.
Very Crystal Clear Sound And balanced Bass as human ear appreciates (Harman Tuned). For me my expectations matched. Now it's time to see how longer time it's sustain .
After using 4–5 budget to mid-range IEMs, the Simgot EW300 feels like a refined upgrade after one month of use. The sound is well-balanced with clean mids, smooth treble, and controlled bass, No fatigue after long use. Clarity and instrument separation are noticeably better than my other IEMs. Thanks to the TAS and Pritam for auditioning multiple IEMS and helping me choose the this IEMs.
This is an all rounder headphones. Sub bass is extended which can be easily EQ d. Treble is decent.The mids are a bliss. A note for AUDIO STORE: PLEASE DON'T CHEAP OUT ON THE DELIVERY. The headphones were sent by road claiming to be more than 2 kg. It was just 845 gm. Also if bluedart is not working out please get another delivery partner. Imagine a 30k headphones bumping around for a 1000km. The headphones wires came attached which is not correct. Despite all this thank God there was no damage to the headphones.
If you have a budget of Rs 4000 and looking to buy an IEM which can do it all, look no further than Kefine Klean. With two tuning nozzles, one warm and other bright, you are sorted for multiple musical genres.
GREAT Product under 2000,must buy
to be concise this is probably the best iem under 35k,
Pros:
- Sub bass and mid bass clarity, quality and volume is amongst the best, this is not a basshead iem but will definitely please a basshead.
- Mids are not recessed and are as accurate as they can be, however are not vocal forward per se but are slightly elevated compared to "v" shape iems, giving this iem a mild "W" shape signature.
-treble is good but for me was very much dependent on the tips I used, when using with sancai wide bores trebles were nice and clear, bright, might be too energetic for some, however with regular tips was perfectly tame and not sibilant to a point of discomfort and had decent air.
So use wide bores if you want to open up the iems, get a little better imaging and seperation but might make the highs a little too energetic, and with regular tips you get more boomy bass but might lose a little of the stage width but is better for treble sensitive folks.
Cons
Condensation issue might be there on rainy days, the wing style fit may not work for all, the iems are medium size and can fit many ear sizes especially with smaller tips but if you don't do well with wings or have atypical ears it may not be for you.
is reminiscent of new meta style tuning, so if you have iems with similar tuning this may be redundant.
Overall:
9/10 literally doesn't get much better than this whether you're putting in 5k more of 1 lakh more, this is the point of diminishing returns, atleast in my opinion, and from this price point on its mostly accesories or timings which actually make a difference.
fit and comfort was amazing for me, i have normal ears, with smaller canals, fits very well for me with small tips, but might have a few pressure spots depending on the ear.
build quality is very good with a nice metal shell.
The cable is very good and premium, accessories are good, and has a premium feel and looks beautiful with good presentation, over-all worth for the money, atleast for me lol.
however you may want to wait for more reviews on the hype 4 mark 2 and the new tea pro SE, and if you're a basshead the martillo is going to be potential endgame.
Very smooth, once you find the appropriate size it will work wonders.
Got the KZ Castor Pro (Harman Target + improved bass) and I’m honestly happy with it right now.
Bass hits nicely and feels punchy without covering up vocals.
Songs sound clean and balanced, and details come through pretty well.
Comfort is good for longer listening too.
Overall, feels totally worth the money.
* might update Review later If my views and experience changes
It's hard cast to secure your IEM and soft on inside to don't scratch the IEM & good space on in side
One year review: incredible audio quality, strong bass, clean highs, and no wear or tear. These IEMs are truly reliable
It's pretty good for the price, good bass and well maintained treble.
Okay, let's talk about this transparent protective case. If you own the MOONDROP ST2s, this case isn't an option, it's a must-buy. Why? Because the original charging case is lidless and instantly attracts dust and scratches!
Fit and Feel
The fit here is fantastic. It slides on perfectly—it's a snug fit with absolutely no loose gaps, which is exactly what you want. Even though it's super affordable, it feels like genuinely good quality in your hand.
Protection and Design
This protective case does its job perfectly: it seals up the whole unit, protecting the original case from dust and scratches. The magnetic lid on this new case works really well, too. You can shake it all you want, and it won't pop open, which is great insurance against the buds falling out of the original lidless design.
I love the look. The transparent design is super cool because it lets the charging case shine through and reflect its original form, all without adding any noticeable bulk.
Just a Quick Heads-Up
It's important to note that the protective case doesn't block the charging port. This means if you travel a lot, you'll still need to keep an eye on that port and clean it regularly to prevent dust buildup.
Final Verdict
My advice is simple: you need this case. Go buy it! Otherwise, you'll constantly be putting the ST2s in a separate IEM box just to protect them. Honestly, doing both—using the protective case and the IEM box—is the best bet for extra protection, which is what I'm doing now.













