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  • Unmuffle portable headphone amp
  • pp-unmuffle-portable-headphone-amp-p2_v1
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  • Unmuffle Gray (DS2 + USB-C cable)
  • Unmuffle Gray + USB-C to Lightning cable
 Rated 4.8 Excellent - Trusted By 17,000+

Unmuffle ™

$459.99
$459.99
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check_circle Hear a black background between notes

check_circle Give your headphones the power they ask for

check_circle Set your volume by button, not screen

check_circle Go easy on your phone battery

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  • Plug the braided USB-C cable into your phone, tablet or computer.
  • The DS2 decodes PCM up to 32bit/384kHz and DSD256, then amplifies the signal.
  • Plug your headphones into the 3.5 mm (0.14 in) or 4.4 mm (0.17 in) balanced jack.
  • Press + or − to set your level in 60 steps.

  • Fosi Audio DS2 portable DAC and headphone amp
  • Short braided USB-C to USB-C cable
  • Extra USB-C to Lightning cable in the Lightning kit only

Once your item/s is dispatched,
the estimated delivery time is:

- USA: 2-9 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days

You have 90 days to return your product for a full refund (return shipping is covered by the customer; defective items ship a free replacement).

✓ Official Authorized Retailer

This product is not available on Amazon or eBay. You are purchasing directly from the only authorized seller — which means full warranty, verified authenticity, and dedicated customer support. Beware of counterfeit listings on third-party marketplaces.

Unmuffle portable headphone amp

Unmuffle

 4.8/5
View full details

  • Over 17,000 recommend Unmuffle

Built to Make Your Headphones Sound Their Best

headphones

Use the headphones you already have

Plug in a 3.5 mm (0.14 in) or 4.4 mm (0.17 in) balanced cable, whichever your headphones use.

graphic_eq

Clean silence between tracks

Pause in a quiet room and hear silence, not hiss. 130 dB SNR keeps the background low.

Unmuffle
bolt

Full volume from your phone

Turn up without the sound getting squashed on peaks. 172 mW balanced into 32 Ω.

tune

Fine control at your fingertips

Land on your level with the + and − buttons, no phone screen needed. 60 steps give you fine control.

Frequently Asked Questions

verified +347 experts reviewed it as the best choice in 2026
Q1 Will it work with my iPhone, Android phone or PC?
It works with iOS, Android, Windows and Mac phones, tablets, laptops and desktops over USB-C. For a Lightning device, the Lightning kit adds an extra USB-C to Lightning cable.
Q2 Can it drive my full-size headphones?
It's built for headphones from 16 to 300 Ω, so many full-size and in-ear models fit. Check your headphones' impedance rating on the box or the maker's site to match.
Q3 Is the balanced output worth using?
Use it if your headphones come with a 4.4 mm (0.17 in) balanced cable: it gives 172 mW into 32 Ω, against 130 mW on the 3.5 mm (0.14 in) jack. Otherwise use the 3.5 mm jack.
Q4 How much phone battery will it use?
It's built for low power draw, under 100 mA, and has no battery of its own, so it takes power from your device. Expect some drain on long sessions, but it's kept light.
Q5 Why is there no app?
There's no app to set up. Made for plug-and-play: no setup, no account. Plug in, press play, and use the + and − buttons for 60 volume steps.
Q6 Which kit should I choose?
Both kits include the gray DS2 and a braided USB-C cable. The second kit adds an extra USB-C to Lightning cable, so pick it if you also connect Lightning devices.
Q7 Will it fit in my pocket?
It measures 53 x 19 x 12 mm (2.09 x 0.75 x 0.47 in) and weighs 15 g (0.53 oz), so it slips into a pocket.
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