SMSL PO100 USB-to-S/PDIF Converter, 192 kHz

AOSHIDA USB-to-S PDIF Converter: SMSL PO100 is a compact USB audio interface that converts USB input to optical and coaxial digital outputs. It suits a phone, computer, player or streamer feeding a DAC or other downstream audio component, but it is not intended to connect directly to active speakers.

At a glance

USB Type-C input feeds optical and coaxial outputs, which the listing says can operate at the same time.
The listing claims PCM support up to 192 kHz, DOP64 and MQA decoding.
Includes Type-C-to-Type-C and USB-A-to-Type-C cables according to the listed contents.
Manufacturer guidance says to connect it to a downstream device before connecting that device to active speakers.

Price

$51.00Save 16%

Reference price: ~~$60.99~~

Price checked: 13 Nov 2026

View offer Ahead of Black FridayExplore the selection

Pros and cons

Pros

Optical and coaxial outputs offer two digital connection options, with simultaneous output claimed by the listing.
The two supplied USB cable types cover Type-C and USB-A host connections.
Customer feedback describes the unit as compact and easy to use, with some customers appreciating its sound and connectivity.

Cons

It outputs digital audio rather than directly driving active speakers, so a suitable downstream device is needed.

Technical specifications

19 specifications

Identity
Brand	AOSHIDA
Model	PO100

Audio and connections
USB input	Type-C USB input
Digital outputs	Optical and coaxial output at the same time
Supported PCM sampling rate	PCM44.1Bit/192kHz
DSD support	Support DOP64
Chip	XMOS XU316
Channels	2
Interface type	Coaxial, Optical, USB
MQA	Support MQA Decoding

Compatibility and power
Compatible devices	Phone/PC/Player/Streamer
Operating system claim	MAC system and WIN10 above do not need to be driven.
Maximum supply voltage	5 Volts

Construction and installation
Material	Aluminium
Mounting types listed	Table Top
Weight listed	0.1 Kilograms
Number of pins	5

Other listed details
Warranty description	1 year repair
Number of items	1

What to know before buying

Listing details to confirm

The listing calls the product a digital-to-analog converter, but its described connections are USB input and optical/coaxial digital outputs. It also inconsistently gives its weight as 0.1 Kilograms in specifications and 0.75g in feature text, and customer feedback about signal quality is mixed. Confirm the exact weight and desired signal path before purchase. The listed PCM rate wording is reproduced as supplied and does not clarify bit depth.

What’s in the box

Included

SMSL PO100
USB Type-C to Type-C cable
USB Type-A to Type-C cable

Who is it for?

A good fit for

Listeners who need USB audio from a computer, phone, player or streamer routed to an optical or coaxial input on a downstream audio component.
Buyers seeking a compact digital interface with both USB-C and USB-A cable options in the stated contents.

Less suited to

Anyone needing a DAC with analogue RCA or headphone output, or a converter that connects directly to active speakers.
Buyers who need IIS output, which the listing says the PO100 does not support.

SMSL PO100 USB-to-S/PDIF Converter, 192 kHz · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 296 ratings

5 stars81%81%
4 stars8%8%
3 stars5%5%
2 stars3%3%
1 star3%3%

Customer feedback highlights ease of use, compact size, sound quality and connectivity, including reports of simultaneous optical and coaxial use. Some feedback describes signal quality as mixed. These are customer impressions, not verification of the listing’s PCM, DSD or MQA claims. For buyers routing USB audio to a downstream DAC, the reported ease and compactness may matter, while the mixed signal-quality feedback is a reason to consider the intended setup carefully.

Positive themes

Customers describe it as easy to use and compact.
Customer feedback includes positive impressions of sound quality and connectivity.

Mixed feedback

Signal quality receives mixed customer feedback.

Frequently asked questions

Can the PO100 connect directly to active speakers?

No. The manufacturer says not to connect it directly to active speakers. Connect it to a suitable downstream device first, then connect that device to the speakers.

Does it have both optical and coaxial outputs?

Yes. The listing describes both outputs and claims they can operate at the same time.

Does the PO100 provide IIS output?

No. The listing comparison states that the PO100 does not support IIS output.

Which USB cables are listed as included?

The contents list specifies one USB Type-C-to-Type-C cable and one USB Type-A-to-Type-C cable.