SIVGA M300 Wired Flat-Head Earbuds Review

SIVGA lists the M300 at $64.90 as a wired flat-head earbud built around a 15.4mm dynamic driver with a single-piece graphene-coated diaphragm. The specification section gives 64Ω±15%, 109dB±3dB, 20Hz~40kHz and a weight of 29 grams, and the fixed silver-plated OFC cable ends in a 3.5mm plug. The housings combine CNC-machined aluminum alloy with African Ebony wood.

Specifications

Options and pricing

Only one option is listed: it is named M300 for both color and model, costs $64.90 and was orderable when read. That leaves no color choice and no plug choice, since the cable is non-detachable and ends in a 3.5mm plug, per the page. The page does not list the box contents or any accessories, so what comes in the box is not stated.

How it compares

The SIVGA M200 HiFi Wired Earphone - With Remote Control is $49 against $64.90 here and lists a PET diaphragm with a copper ring where the M300 has a graphene-coated one; the M200 name includes a remote control, and the M300 page mentions none. The DUNU DTW 300 Bluetooth 5.4 True Wireless Earbuds cost $59 and drop the cable entirely. The M300 suits a wired listener who wants stated impedance and sensitivity tolerances; the DTW 300 suits a wireless buyer.

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.

HiFiGO's warranty runs one year from the order date for parts and labor; its policy names desktop DACs and amps, IEMs and dongles at one year and gives cables and adapters three months. HiFiGO decides between repair and replacement, the buyer pays the shipping, and faulty items go back for service, not for a refund. Claims go to [email protected], the only contact the store lists: its pages name no company, street address or phone, and its terms are governed by the laws of China.

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.