MUSE HiFi M5 Ultra Tube DAC/Amp Review

Two JAN6418 vacuum tubes sit inside the MUSE HiFi M5 Ultra, a portable DAC and amp with USB and Bluetooth inputs and a built-in display. The page names an ES9038Q2M chip, a Qualcomm QCC5125 Bluetooth chipset and a 3000mAh battery, and the unit has 3.5mm single-ended and 4.4mm balanced headphone outputs. HiFiGO's page prices it at $290, with $299 shown crossed out.

Specifications

Options and pricing

A single option, named M5 Ultra under the Color heading, is priced at $290 and was orderable when the page was read, and the page shows a crossed-out price of $299. Tube and transistor modes both work on the 3.5mm and the 4.4mm output, so one unit covers both plug types. The page text names no color choices, cables or box contents, and points to a desktop driver download guide.

How it compares

Against the xDuoo DM01 at $279, the M5 Ultra at $290 is titled portable, while the DM01 page calls its unit a desktop DAC and headphone amplifier built on a CS43131 chip. The iBasso DC-Tonfa is $339.99 and names an 8CH R2R DAC in its title, where the M5 Ultra page names an ES9038Q2M chip. The FiiO QX13 is listed from $219.99 with an ES9027SPRO chip named in its title. The M5 Ultra suits buyers who want tubes with Bluetooth in a portable unit; the DC-Tonfa suits those who prefer an R2R design.

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.