DUNU DUW02S Earphone Cable Review

DUNU's DUW02S is a four-conductor earphone cable that the page describes as high-purity silver-plated OCC copper in a Type 1 Litz configuration, 26 AWG / Core, handbraided into a round Litz braid. It is listed from $79 in MMCX or 2Pin 0.78mm versions with a 3.5 mm TRS plug as standard, and the page gives a length of 1.2 ± 0.1 meter.

Specifications

Options and pricing

Eight options are listed, all orderable when read. The 3.5mm versions in 2Pin 0.78mm and MMCX are $79, the +4.4mm and +2.5mm options are $95.99 and the +Type-C options are $105.99, in either connector. The page text mentions an Apple Lightning or USB Type-C digital plug, but no option names Lightning.

How it compares

The DUNU DUW02 Pro is $79 and its spec reads Litz Type 4 Structure, against Type 1 Litz here, and its name mentions a Q-Lock plug system, as this page's text does with Q-Lock PLUS. The HAKUGEI Burning Modular Plug 5 To 1 is listed from $72, with a spec line of 2.5 / 3.5 /4.4 / Type-C / Lightning plus 0.78 2Pin / MMCX. The DUW02S suits buyers who want to add a 4.4mm, 2.5mm or Type-C plug at purchase.

Shipping, returns and warranty

HiFiGO sells from hifigo.com and says every order leaves its warehouse in China, usually 1-3 business days after it is placed, and says its delivery times are estimates, not promises. Its shipping policy gives the United States 1-2 weeks (about 10 days on average) by Priority and 6-10 days by Premium, both with duties and taxes prepaid by the store; Canada 2-3 weeks; the United Kingdom 1-2 weeks; and Australia 10-15 days. Express couriers (DHL, UPS, FedEx) take 3-7 days, but then the buyer pays any duties and taxes. No shipping page names New Zealand, PO boxes are not accepted, and the free-shipping thresholds differ between the store's own pages, so check the cart. One of its two shipping pages adds that a lost parcel on an order above $50 gets only a 50% refund. A US buyer reported a $40 tariff charge in August 2025, after which HiFiGO said it had added a customs notice at checkout.

Read the return terms before you order. The homepage advertises 7-day returns. Both of HiFiGO's policy pages offer a 7-day dead-on-arrival cover (a replacement or a full refund, with the return postage refunded) and also describe 30-day returns, but a request made 7 to 30 days after delivery loses 30% of the MSRP as a restocking fee (10% more if the packaging is incomplete), plus shipping both ways and duties, and the FAQ on the same pages says there is no refund or exchange once 7 days have passed. One version recommends reselling an opened product locally. Custom IEMs and custom cables cannot be returned, no return address is published, and buyers describe sending items back to China.

Cables and adapters get three months of warranty from the order date, against one year for DACs, amps and IEMs; a note on the same page also excludes cables from returns for hygiene reasons, while the FAQ says a cable can come back in its original condition. HiFiGO decides between repair and replacement and the buyer pays the shipping. Claims go to [email protected], the only contact the store lists: its pages name no company, street address or phone.

On Trustpilot, HiFiGO had 4.6 out of 5 from 378 reviews when we checked on 2026-10-28 (91% five-star, 5% one-star), and it had replied to about 75% of negative reviews; Trustpilot notes the store has not invited customers to review recently. The one-star reviews mostly concern the short return window and the deductions on returns, items listed in stock that turned out back-ordered, slow email support and a tariff charge on a US delivery in 2025. HiFiGO says its products are genuine and come in the brands' retail packaging; it does not claim to be an authorized dealer.