SMSL PO100 USB Digital Interface with MQA Decoding

Regular price: $335.81
Regular price
Sale price: $335.81

Shipping calculated at checkout.

Product variants:

Product Highlights

· XMOS XU316 3rd-gen processor with SMSL CK-02 ultra-low-jitter clock circuit

· Full MQA decoding without requiring specialized playback software

· Optical TOSLINK and coaxial RCA digital outputs with DOP64 support

· USB-C input with asynchronous transmission for jitter-free data transfer

· Driver-free operation on macOS, Windows 10+, Android, iOS, and Linux

· USB bus powered — no external power supply required

· Compact pocket-sized design weighing only 75 grams

USB Digital Interface with MQA and CK-02 Clock

The SMSL PO100 is a compact USB digital interface that transforms USB audio signals into pristine optical and coaxial digital outputs for connection to any DAC or decoder. Built around the 3rd-generation XMOS XU316 processor with SMSL's proprietary CK-02 ultra-low-jitter clock circuit, supporting PCM up to 192 kHz, DOP64 (DSD64), and full MQA decoding without requiring specialized playback software, the PO100 delivers bit-perfect, low-noise digital conversion in a pocket-sized 75-gram aluminum chassis that weighs less than a smartphone.

XMOS XU316 with CK-02 Clock Circuit

The 3rd-generation XMOS XU316 processor provides asynchronous USB transmission for jitter-free data transfer, while SMSL's CK-02 clock circuit dramatically reduces timing errors at the output stage. The result is coaxial and optical digital outputs with vanishingly low clock jitter — delivering a pristine, stable bitstream to your external DAC.

Full MQA Decoding Without Specialized Software

Unlike many USB interfaces that require foobar2000, Audirvana, or other specialized media players for MQA playback, the PO100 handles MQA decoding natively. Simply use any audio application with ASIO or WASAPI output, and the PO100 unfolds MQA-encoded content with studio-authenticated precision.

Optical and Coaxial Outputs with DOP64 Support

Both optical (TOSLINK) and coaxial (RCA) digital outputs support sampling rates from 44.1 kHz to 192 kHz, plus DOP64 for DSD64 transport. Connect the PO100 to any DAC with SPDIF inputs to add high-quality USB connectivity without replacing your existing digital components.

USB-C Input with Broad Compatibility

A modern USB-C input connects to computers, phones, tablets, and USB-enabled streamers and players. Compatible with Windows (10 and above, driver-free; earlier versions require a driver), macOS (driver-free), Android, iOS, and Linux. The PO100 appears as "SMSL USB AUDIO" in system audio settings for instant recognition.

Reduced Noise and Interference

By converting USB audio to optical or coaxial signals, the PO100 eliminates common USB-related audio issues: power rail noise, electromagnetic interference from the host computer, and clock-domain timing errors. The result is a cleaner, quieter signal reaching your DAC — with demonstrably improved fidelity.

Compact, Portable, 75 Grams

Weighing only 75 grams including packaging and measuring smaller than most smartphones, the PO100 disappears into any desktop or portable audio setup. It requires no external power supply — USB bus power is all that is needed.

Specifications