TFZ OSHUN DECO Portable DAC/Amp Review
A USB DAC/amp with two CS43198 DAC chips, two SGM8262 amplifier chips and both 3.5mm and 4.4mm outputs, listed at $145.90. It suits IEM and headphone owners who want a 10-band PEQ app, per the page.

Our verdict
A fit for IEM and headphone owners who want a USB DAC/amp with both 3.5mm and 4.4mm outputs, two CS43198 chips and an app-based 10-band equalizer at $145.90. Look elsewhere if you need a named USB connector or iOS app support, which the page text does not give. The main caveat is that every figure is the store's own and the page has no specification list as text.
- Best for
- IEM or headphone owners who want 3.5mm and 4.4mm outputs and a 10-band PEQ app.
- Skip if
- You need a named USB connector, iOS app support or an outside measurement of the output.
Why 3.4/5: It is held back by having no specification list as text, by terms on the store's own pages that contradict each other and by figures with no independent test checked for this review.
EarAcoustic Audio's OSHUN DECO is a USB DAC/amp that the store files under the TFZ vendor name and lists at $145.90. The page names two CS43198 DAC chips, two SGM8262 amplifier chips and a CB5100PRO USB chip, with PCM up to 32-Bit/768kHz, native DSD256 and up to 551.25mW at 32Ω. It has a 3.5mm single-ended and a 4.4mm balanced output, and the page puts the CNC aluminum alloy chassis at 24.1g.
Specifications
| Spec | Page says |
|---|---|
| DAC chips | Dual CS43198 |
| Amplifier chips | Dual SGM8262 |
| USB chipset | CB5100PRO (DSP, ADC and PGA integrated) |
| PCM | Up to 32-Bit/768kHz |
| DSD | Native DSD256 |
| Headphone outputs | 3.5mm single-ended and 4.4mm balanced |
| Output power | Up to 551.25mW at 32Ω (551mW per channel in the features) |
| Load support | Adaptive, 16Ω to 600Ω |
| THD+N | Down to ≤0.0005% |
| SNR and dynamic range | Above 115dB |
| EQ | 10-band PEQ via the WALK PLAY app |
| Body | Full CNC aluminum alloy, 24.1g chassis |
| Plug detection | Smart detection of 3-pole and 4-pole plugs |
Options and pricing
Two colors are listed, OSHUN DECO Gold and OSHUN DECO Silver, both at $145.90 and both orderable when the page was read. The page text does not list a cable, case or other accessory, has no in-the-box section and does not name the USB connector. It does describe an RGB indicator light that changes color with the sample rate.
How it compares
The SHANLING ONIX XI1 is $119.99 and names CS43198 and SGM8262 in its title, the same parts this page lists. The FiiO QX11 is $159.99 and its spec line lists native DSD512, against DSD256 here. The xDuoo XP-2 BAL is $169 and is titled as a Bluetooth DAC, a feature the page text never mentions. Pick the XI1 for the same parts at a lower price, the QX11 for the higher DSD rate and the XP-2 BAL for a wireless link.
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.
What we liked
- Two CS43198 DAC chips and two SGM8262 amplifier chips are named on the page
- Both a 3.5mm single-ended and a 4.4mm balanced output, with a circuit that detects 3-pole and 4-pole plugs
- Output of up to 551.25mW is given together with its 32Ω load
- 10-band PEQ through the WALK PLAY companion app
- PCM up to 32-Bit/768kHz and native DSD256 listed, with THD+N and SNR figures
Worth noting
- No specification list as text: the figures are spread through feature bullets and marketing paragraphs
- The page text does not name the USB connector and lists no cable, case or in-the-box items
- App support is stated for Android and HarmonyOS only; iOS is not mentioned in the page text
- Output is 551mW per channel in the features and 551.25mW at 32Ω in the text, with no figure for other loads in the page text
- The store's vendor field says TFZ while the title and text credit EarAcoustic Audio
Questions before you buy
Which headphone outputs does the OSHUN DECO have?
The page lists a 3.5mm single-ended port and a 4.4mm balanced port, with a smart detection circuit that identifies 3-pole and 4-pole plugs.
How much power does it give and at what load?
The text gives up to 551.25mW at 32Ω, while the feature list says up to 551mW per channel. The page also lists adaptive load support from 16Ω to 600Ω and names two SGM8262 amplifier chips.
How does the equalizer work?
The page lists 10-band PEQ support through the WALK PLAY companion app, supported on Android and HarmonyOS, and says the CB5100PRO USB chip integrates a DSP, ADC and PGA.
Where does HiFiGO ship from, and how long does it take?
From its warehouse in China, usually 1-3 business days after the order. The shipping policy gives 1-2 weeks to the US by Priority (6-10 days by Premium), both with duties and taxes prepaid, 2-3 weeks to Canada, 1-2 weeks to the UK and 10-15 days to Australia. Express couriers take 3-7 days, but the buyer pays any duties.
Can I send it back if I change my mind?
HiFiGO gives 7 days to report an item that arrives dead, damaged or wrong. Its policy also describes 30-day returns, but requests 7 to 30 days after delivery lose 30% of the MSRP plus shipping both ways and duties, and the FAQ on the same page says no refund or exchange after 7 days. Ask [email protected] before you open the box.
What warranty does HiFiGO give?
One year from the order date for parts and labor, for faults in build or materials (the policy names desktop DACs and amps, IEMs and dongles; cables and adapters get three months). HiFiGO chooses repair or replacement, the buyer pays the shipping, and a faulty item is serviced rather than refunded. Claims go to [email protected].
Sources & verification
What this review is based on and the day we last read it. Specs and claims from the maker are the maker’s own; the verdict and the rating are ours.
From the store
- EarAcoustic Audio OSHUN DECO CS43198*2 Portable DAC & AMP product page: specs, options and priceSpecs, options and the listed priceRead October 28, 2026
- HiFiGO shipping policyShips from China in 1-3 business days; US 1-2 weeks by Priority or 6-10 days by Premium, duties prepaid; Express buyers pay dutiesRead October 28, 2026
- HiFiGO shipping and order tracking pageA second shipping text: Premium also for Canada and Australia, Canada free shipping from $99.99, lost-parcel rulesRead October 28, 2026
- HiFiGO refund policy7-day dead-on-arrival cover; 30-day returns minus a 30% restocking fee; its FAQ says no refund after 7 daysRead October 28, 2026
- HiFiGO warranty and refund policyWarranty by product class (1 year; cables and adapters 3 months); 30% fee for resealing an opened productRead October 28, 2026
- HiFiGO terms of serviceOperator named only as HiFiGo; governed by the laws of China; contact [email protected]Read October 28, 2026
Independent
- HiFiGO reviews on Trustpilot4.6 of 5 from 378 reviews (91% five-star, 5% one-star); the store has not invited reviews recentlyRead October 28, 2026
What we couldn’t verify
- Output power appears as up to 551mW per channel in the feature list and up to 551.25mW at 32Ω in the text; the page text gives no figure for other loads.
- The store's vendor field says TFZ, but the title and text name EarAcoustic Audio; the page text does not explain the link between the two names.
- THD+N down to ≤0.0005%, SNR and dynamic range above 115dB and the Hi-Res claim are the page's own figures, with no measurement conditions in the page text.
- HiFiGO's policy pages contradict each other: 30-day returns with a 30% restocking fee in one place, no refund or exchange after 7 days in the FAQ.
- HiFiGO's pages name no company, street address or phone number; the only contact given is [email protected].
Spotted an error or something out of date? Tell us and we’ll fix it and update the date.


