Open Audio OA112 Hybrid IEMs Review

The Open Audio OA112 combines one dynamic driver and two balanced armatures, and it is listed at $351.99 with a crossed-out price of $399.99 shown on the page. The specification lines give 20Ω(@1kHz), 110dB SPL(@1mW) and 10-20kHz, and the page describes a 4-core OCC single crystal copper cable that it calls detachable, with a 2-pin 0.78mm connector.

Specifications

Options and pricing

Two colors are listed, Blue and Green, each at $351.99 and orderable when the page was read, and the page shows a crossed-out price of $399.99 next to that amount. The page names a 4-core OCC single crystal copper detachable cable on a 2-pin 0.78mm connector, and resin shells made with a handmade quicksand process. The page text gives no termination plug size, cable length, ear tips or box contents.

How it compares

The Moondrop Blessing3 / Blessing 3 2DD + 4BA Hybrid In-Ear Monitors are $359.99 and list 2DD + 4BA drivers, against 1DD + 2BA at $351.99 here. The Geek Wold GK200 6BA+2DD+2PZT Hybrid Driver In-Ear Monitor is $350 with 6BA+2DD+2PZT drivers per side, and the Moondrop Harmon 3 Dynamic Drivers In-Ear Earphone is $349.99 with dual 10mm dynamic drivers. The OA112 suits buyers who want a 1DD + 2BA hybrid with a cable the page calls detachable; the Blessing3 and the GK200 list more drivers, at $359.99 and $350.

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.