S H I P P E D F R O M J A P A N

Audioquest THX ONYX Portable DAC Headphone Amplifier USB-C Tested Working

THX ONYX DAC/Amp · USB-C · Compact · Good Condition w/ Light Wear

OUTPUT POWER
75mW @ 32Ω
THD+N
-137dB (typical)
CONNECTIVITY
USB-C
C O N D I T I O N   R A N K
B

Rank B — Good

Tested · Visible Wear
Tested and confirmed working (2025-06). Unit powers on and audio output verified via USB-C. Light signs of use visible on body and connector area, but no deep scratches or functional issues. No original box or accessories included — unit only.

In the box

I N C L U D E D
Main UnitAudioquest THX ONYX Portable DAC/Headphone Amplifier
AccessoriesNone (unit only)

Specifications

S P E C S
BrandAudioquest
ModelTHX ONYX
TypePortable DAC & Headphone Amplifier
ConnectivityUSB-C
Output3.5mm Headphone Jack
DAC ChipSabre ES9281AC Pro
THX TechnologyAAA (Achromatic Audio Amplifier)
Compatible DevicesPC, Mac, Android, USB-C Devices
ColorBlack
C E R T DDP PREPAID

No surprise customs fees. Ever.

Since October 2025, the US eliminated the $800 de minimis exemption — most sellers now ship DDU, meaning buyers receive unexpected customs invoices after delivery.

MonoHonpo ships every US order DDP (Delivered Duty Paid). Your listed price includes the item, international shipping, US customs duties, and import taxes. When the package arrives, you pay nothing more.

Shipping & handlingS H I P P I N G

OriginTokyo, Japan
CarrierFedEx International Priority / DHL SpeedPAK · tracked, insured
HandlingShips within 1 business day
Delivery (US)5–9 business days (FedEx / DHL SpeedPAK Expedited, tracked)
PackagingDouble-boxed · bubble-wrapped · waterproof liner
DutiesDDP — US import duties prepaid by seller

Condition Rank Definitions

NNew (Unopened) — Brand new, factory sealed
SLike New — Opened but unused, no visible wear
AExcellent — Minor wear, tested and fully working
BGood — Visible use marks, tested and fully working
CFair — Heavy use marks, tested and fully working
DIssues — Cosmetic or function issues, working with limits
POPower-On Only — Powers on, full function not verified
As-IsAs-Is — Not fully tested, sold without warranty

Payment

We accept eBay Managed Payments (credit cards, PayPal, Apple Pay, Google Pay). Import duties and taxes for US buyers are prepaid (DDP). International (non-US) buyers are responsible for their country's import duties. To cancel after purchase, please contact us immediately.

Voltage notice

Some electronics from Japan are designed for AC 100V. For use in regions with 200–240V, a step-down transformer may be required. Please confirm voltage compatibility before purchase. Damage caused by incorrect voltage is not covered by warranty.

Physical store notice

This item may also be listed in our physical workshop in Tokyo. In rare cases it may sell in-store before an online order is processed. If this occurs we will notify you immediately and issue a full refund.

If you need anything

Questions before purchase are always welcome — messages answered within 24 hours on Tokyo business days. If something about the item doesn't match the description on arrival, contact us first: we cover return shipping on misdescribed items.Item is small and lightweight. Will be securely padded to prevent connector damage during transit.

M O N O H O N P O
M O N O   H O N P O

One workbench in Tokyo. Every item sits on the bench for a full session before it is photographed, graded, and packed. If it doesn't test clean, it doesn't list.

We specialize in industrial sensors & test gear, vintage Japanese audio, and hand-selected specialist tools. US buyers get DDP on every order.

eBay Messages · Response < 24h · Tokyo JST