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

Razer THX Onyx Portable USB DAC Headphone Amplifier New Sealed Japan

Portable USB-C DAC/amp with THX AAA amplification and ESS ES9281PRO chip, sealed

OUTPUT

180mW

DAC

ES9281PRO

FORMATS

DSD128/MQA

C O N D I T I O N R A N K

Rank N — New

Brand New Sealed

Factory sealed and unopened, so functionality has not been individually tested by the seller. Includes all original accessories in retail packaging with USB-A adapter. Sold as brand new stock from Japan.

In the box

I N C L U D E D

Main UnitRazer THX Onyx Portable DAC/Headphone Amplifier

AdapterUSB-A to USB-C Adapter

PackagingFactory Sealed Retail Box

DocumentationOriginal Manual/Warranty Card (Japan)

Specifications

S P E C S

Brand	Razer
Model	RC21-01630100-R3M1
Type	Portable DAC/Headphone Amplifier
DAC Chip	ESS ES9281PRO
Amplifier Tech	THX AAA
Connectivity	USB-C, 3.5mm
Output Power	180mW @ 22Ω (1% THD)
Supported Formats	PCM 32bit/384kHz, DSD128, MQA
Dimensions	Approx. 135 x 14 x 9 mm

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

N	New — Brand new, factory sealed
S	New (Opened) — Opened but unused, no visible wear
A	Excellent — Minor wear, tested and fully working
B	Good — Visible use marks, tested and fully working
C	Fair — Heavy use marks, tested and fully working
D	Issues — Cosmetic or function issues, working with limits
PO	Power-On Only — Powers on, full function not verified
As-Is	As-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.

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