Fosi Audio DS1 Dongle DAC Headphone Amplifier
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Fosi Audio DS1 Dongle DAC Headphone Amplifier
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FAQ’s
If you have any questions, please refer here: FAQs
Product details
- Small USB DAC headphone amplifier with optimized HiFi audio architecture ensures High-Resolution sound quality. The portable USB DAC DS1 is compatible with various systems like Android/iOS/Windows/Mac, compatible with the latest devices: phones/computers/tablets/laptops/audio players, etc. Wonderfully versatile when commuting in the home, office, or gaming.
- DS1 adopts ESS Technology ES9038Q2M DAC Chips supporting DSD 512 and 32Bit/768kHz PCM, features best-in-class specifications, and high-power outputs capable of supporting the most demanding of headphones with impedance above 200Ω.
- Low Noise Floor Clean Sound for True High-Fidelity. DS1 features abundant power with a high signal-to-noise ratio, low distortion, and almost 0 noise.
- 3.5MM+4.4MM Dual Headphone Outputs are both Powerful enough to easily drive most headphones. The traditional 3.5mm single-ended headphone output is widely compatible with most headphones, and a 4.4mm balanced headphone output for a more detailed audio experience. Specifications: THD+N<0.0006%, output power up to 220mw, SNR>120dB, Noise<1.6UV.
- What You Get: DS1 USB DAC Headphone Amp x1, Type-C to Type-C cable x1, USB-A to USB-C Converter x1, user manual x1, our worry-free 24-month warranty, and friendly customer service. NOTE: The new version of the DS1 headphone amp optimized the volume control which is independently controlled from the audio source device.
Specifications
| Specifications | Details |
|---|---|
| Model | DS1 |
| Output Power | 120mW(SE); 220mW(BAL) |
| Terminating Impedance | 16-300Ω |
| Input Mode | USB Type C |
| Output Mode | 3.5MM + 4.4MM Headphone |
| Frequency Range | 20Hz-20kHz (±0.5dB) |
| THD | 0.0006%(32Ω SE); 0.001%(32Ω BAL) |
| SNR | ≥120 dB |
| Sampling Rate | 32bit/768kHz |
| DSD | DSD64/128/256/512 |
| DAC Chipset | ES9038Q2M |
| Material | Tin Alloy |
| Device Weight | 38g |
What‘s in the box？
| Item | Quantity |
|---|---|
| Fosi Audio DS1 | x 1 |
| Type-C to Type-C cable | x 1 |
| USB-A to USB-C Converter | x 1 |
| User Manual | x 1 |
FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.
This dac is a little older but its solid, not just in its construction but its performance. First of all its made of a sold block of some sort of metal so it gives it a little heft for such a small size. 4.4 and 2.5mm plugs offer balanced and unbalanced outputs. Both give decent loudness through my 150ohm headphones. I think nowadays it could use a little more power but to retain your hearing its better this way lol. I tried it with the pc and with a lightning usb 3 dongle adapter for my iphone. Both sound good and i hear the clarity and separation that normally you'd need your old vinyl to hear. Easy to operate, 60 volume steps, Holding volume button switches to uac1 mode. Holding both vol up and down switches between high and low gain modes in both uac2 or uac1 modes. Flashing led means its in uac1 mode. Solid led colors in uac2 mode. Anyways if you want better sound, but dont listen more then a few hours at a time then these are great. They do use phone power or tablet power so you will need to keep track if you do listen for hours. If on a pc it charges so no worries. Anyways great little device.
This dac is a little older but its solid, not just in its construction but its performance. First of all its made of a sold block of some sort of metal so it gives it a little heft for such a small size. 4.4 and 2.5mm plugs offer balanced and unbalanced outputs. Both give decent loudness through my 150ohm headphones. I think nowadays it could use a little more power but to retain your hearing its better this way lol. I tried it with the pc and with a lightning usb 3 dongle adapter for my iphone. Both sound good and i hear the clarity and separation that normally you'd need your old vinyl to hear. Easy to operate, 60 volume steps, Holding volume button switches to uac1 mode. Holding both vol up and down switches between high and low gain modes in both uac2 or uac1 modes. Flashing led means its in uac1 mode. Solid led colors in uac2 mode. Anyways if you want better sound, but dont listen more then a few hours at a time then these are great. They do use phone power or tablet power so you will need to keep track if you do listen for hours. If on a pc it charges so no worries. Anyways great little device.
It's a lot of fun, and the quality is also good. Thank you so much!
It's a lot of fun, and the quality is also good. Thank you so much!
small, powerful, great for smaller audio stuff
small, powerful, great for smaller audio stuff
Snapdragon laptop, Usb-C, balanced cable, Sennheisser 620s.
Windows 11 24H2
Youtube Music, Apple Music great on it.
Great Volume, Detail, Sound Stage
The reviews I viewed where right is agreat product.
More details in the specs, please.Audiophiles like that.
Hello,that is one best headphone dac,I've been using it with my Ikko obsydian H10 oem headphones and a Neutron player mostly listening to flac files,and sound is amazing,dac has separate volume control with lots of output power,tested it just for fun with Macbook pro and IPhone 16 pro Max,everything works flawlessly,if you want to get best music listening experience,this dac is for you.
Hello,that is one best headphone dac,I've been using it with my Ikko obsydian H10 oem headphones and a Neutron player mostly listening to flac files,and sound is amazing,dac has separate volume control with lots of output power,tested it just for fun with Macbook pro and IPhone 16 pro Max,everything works flawlessly,if you want to get best music listening experience,this dac is for you.
Amazing how the DS1 made the sound so clear and easy to hear all the instruments being used in the music. It continues to improve with time. Thank you Fosi Team
Amazing how the DS1 made the sound so clear and easy to hear all the instruments being used in the music. It continues to improve with time. Thank you Fosi Team
I bought this little DAC/AMP for roadtripping with my DCA Noire X headphones and iPad Mini running Apple Music. I also use the same set up bedside for late night music listening so I don't disturb my better 7/8ths.
I'm using the 4.4mm balanced input.
I'm using this little DS1 Dongle to drive my Noire X with my iPhone 16 as I type this review. I love listening to latin and world music - have the "Oy" from the Gypsy Kings playing - which can sound really congested and muddy on a crappy audio rig. I'm getting beautiful detail, clarity, dynamics, separation. Even presents the nuanced details in music that can be impossible to hear on more expensive home speaker rigs. Plenty of bass oomph when the music calls for it. I can crank the volume to fairly painful levels without distortion. Not recommended, but you do you.
The one bugger could be....this little amp will suck the power out of your smartphone pretty quickly. That should be obvious. You might get a good 90-120 minutes of playback give or take, depending on your volume setting. I don't listen to my music terribly loudly - prefer to keep my hearing performing well long term (me doing me). ...If you need longer playback, I think it's better paired with an iPad/tablet or a laptop. The iPad Mini is sweet spot. :)
For a good two hour listening session in your favorite chair in your home, coffee shop, wherever you need keep pretty quiet and not disturb other while still want outstanding high fidelity, this is hard to beat.
I love this little dongle - I would highly recommend if they have the power to drive your headphones (double check the specifications).
I bought this little DAC/AMP for roadtripping with my DCA Noire X headphones and iPad Mini running Apple Music. I also use the same set up bedside for late night music listening so I don't disturb my better 7/8ths.
I'm using the 4.4mm balanced input.
I'm using this little DS1 Dongle to drive my Noire X with my iPhone 16 as I type this review. I love listening to latin and world music - have the "Oy" from the Gypsy Kings playing - which can sound really congested and muddy on a crappy audio rig. I'm getting beautiful detail, clarity, dynamics, separation. Even presents the nuanced details in music that can be impossible to hear on more expensive home speaker rigs. Plenty of bass oomph when the music calls for it. I can crank the volume to fairly painful levels without distortion. Not recommended, but you do you.
The one bugger could be....this little amp will suck the power out of your smartphone pretty quickly. That should be obvious. You might get a good 90-120 minutes of playback give or take, depending on your volume setting. I don't listen to my music terribly loudly - prefer to keep my hearing performing well long term (me doing me). ...If you need longer playback, I think it's better paired with an iPad/tablet or a laptop. The iPad Mini is sweet spot. :)
For a good two hour listening session in your favorite chair in your home, coffee shop, wherever you need keep pretty quiet and not disturb other while still want outstanding high fidelity, this is hard to beat.
I love this little dongle - I would highly recommend if they have the power to drive your headphones (double check the specifications).
Best thing ever
Best thing ever
Works great 👍
Works great ??
Works like a charm
Works like a charm
Feels well built, is small, sleek, and makes my 250ohm DT770's sound great. No noticeable noise. I am happy with my purchase.
Feels well built, is small, sleek, and makes my 250ohm DT770's sound great. No noticeable noise. I am happy with my purchase.
The build quality seems strong. I bought it as I liked that it has an independent volume control (which is more subtle than the volume on my iPhone) and this works well.
The build quality seems strong. I bought it as I liked that it has an independent volume control (which is more subtle than the volume on my iPhone) and this works well.
I initially just wanted the Fosi Audio IM4 Open-back in-ear monitor, as I saw the YouTube reviews were good for its price. Then curiosity got the better of me and I got the DS1 Headphone Amp and boy was I glad I got them. The difference without and with it plugged in is remarkable. It was definitely worth the add-on. They sound is so superior and clear compared to my other earphones. Highly recommended and super quick delivery too after pledge.