The xDuoo Link 2021 is a hi-res USB DAC adapter cable that plugs into a USB-C phone or PC and gives wired headphones their own 3.5mm jack, with a play/pause button and rocker key on the housing. It suits phone and laptop listeners who want a simple one-piece wired upgrade in blue, red or gray.
Who the xDuoo Link 2021 is for
Phones without a headphone jack: The USB-C plug turns the phone's charging port into a 3.5mm headphone output driven by the Link's own DAC.
Laptops and PCs: It works with PCs as well as phones, so one cable covers a USB-C laptop and your phone.
Commuters: The cable is attached, so there is no separate cable to carry, and the play/pause button sits on the housing.
Skip it if: you use 4.4mm balanced headphones or a USB-A or Lightning source without an adapter; it has one 3.5mm jack and a fixed USB-C plug.
xDuoo Link 2021 key specs
Type: Hi-res USB DAC adapter cable
Input: USB-C plug on an attached cable
Output: 3.5mm headphone jack
Controls: Play/pause button and rocker key on the housing
Works with: USB-C phones and PCs
Colors: Blue, Red, Gray
Genuine xDuoo stock. Free shipping on every order, 45-day returns.
xDuoo Link 2021 vs similar options
vs SMSL D10: Adds dual CS43131 DACs, a 4.4mm balanced output and up to 500mW at 32Ω, with a detachable cable; pick the Link 2021 for a one-piece design with the cable built in.
vs JCALLY x Crinacle AP6: Adds a 4.4mm balanced output and a USB-C to USB-A adapter in the box; pick the Link 2021 for its built-in cable, so there is no separate USB-C cable to carry.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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