Moondrop Chu II IEMs Review

At $22.99, the Moondrop Chu II is a single dynamic driver IEM that the page calls a successor to the Moondrop Chu. The spec section lists 18Ω ±15% impedance, 119dB/Vrms sensitivity, THD+N of ≤0.5% and a 15Hz-38kHz response with an effective range of 20Hz-20kHz. The driver uses an aluminum-magnesium alloy composite diaphragm, the nozzle is CNC-machined brass with a replaceable mouth, and the cable connects through 0.78mm 2-pin connectors.

Specifications

Options and pricing

One option is listed, Chu2-No Mic at $22.99, and it was orderable when the page was read. The option name says no microphone and the spec section names a 3.5mm single-ended termination, so no Type C or balanced version appears in the options or the spec section. The cable uses 0.78mm 2-pin connectors, and the page names upgrade cables and Bluetooth cables as fits for them. The page text lists no colors and no box contents.

How it compares

The Moondrop CHU III / CHU 3 10mm Composite Diaphragm Dynamic Driver IEMs are $24.99 against $22.99 here, and their name gives a 10mm driver with a composite diaphragm, so the two share a maker and a driver size. The Pula Audio ARC 10mm PET Dynamic Driver In-Ear Monitor is listed from $20.99 and its name gives a PET dynamic driver. The Chu II suits a buyer who wants impedance and sensitivity printed on the page with a 3.5mm cable at $22.99; the ARC starts at a lower price, and the CHU III is listed at a higher one.

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.