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MillSO USB Audio Adapter Stereo External Sound Card, USB to 3.5mm TRS Headphone + Microphone Audio Jack Splitter for Dual-Plug Gaming Headset to Laptop, Desktop, PC, PS4, PS5 [Built_in Chip - 1 FT]
MillSO

MillSO USB Audio Adapter Stereo External Sound Card

Bottom line: The MillSO USB Audio Adapter Stereo External Sound Card ($9.99 on Amazon as of 2026-10-06): Splits one USB port into separate green audio and pink mic 3.5mm TRS jacks; main trade-off: not compatible with TRRS or TS single-plug headsets, only dual-plug TRS.

$9.99

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Buy on Amazon — $9.99 Compare to similar sound cards

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Splits one USB port into separate green audio and pink mic 3.5mm TRS jacks
  • ✓ Driver-free plug and play, USB bus-powered with no external adapter needed
  • ✓ Revives a dead onboard sound card by bypassing the PC 3.5mm jack entirely
  • ✓ Works with Windows XP through 10, Linux, Raspberry Pi, PS4 and PS5
  • ✓ 12-month warranty, extendable to 18 months via MillSO support

Cons

  • ✗ Not compatible with TRRS or TS single-plug headsets, only dual-plug TRS
  • ✗ Blocked from TVs, amplifiers, CD players, PS3, Xbox and car audio systems
  • ✗ Short 1 ft cable forces the adapter to hang right at the USB port
  • ✗ Fixed DAC chip offers no volume, gain, or EQ controls of its own

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SpecPicks Verdict

SpecPicks scored MillSO USB Audio Adapter Stereo External Sound Card using a rating × review-volume × price-fit model applied to published specs and reviews across the sound cards category. MillSO's sound cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for sound cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • [MillSO USB Headphone Audio Jack Adapter] - USB to dual TRS 3.5mm female ports, green for audio, pink for mic, allows a dual-plug headset to your PC USB interface, bypasses the computer 3.5mm audio jack, supports clearer and richer stereo sound. It's a perfect replacement to revive a broken computer's original sound card, to wake up a silent computer. (NOTICE: NOT compatible with TS, TRRS mic/headphone. NOT for TV, amplifier, CD player, PS3, xbox，car, or truck.)
  • [Wide Compatibility] - The USB port of this USB external sound card compatible with Windows 10/8.1/8/7/Vista/XP, Surface 3 pro, Linux, Raspberry Pi, IOS 8.6 or above, PS5, PS4, etc. The 3.5mm ports of this headphone jack adapter compatible with a dual-plug headset, TRS mic, or TRS speaker, TRS plug has 2 black rings. (NOTICE: For any compatibility issues, please contact our warm 24-hour customer support team.)
  • [Built-in smart Chipset] - Built-in smart DAC Chip for high-speed audio signal decoding and offers a full and delicate tone, highly restored quality sound, users can enjoy a quality speaker sound system in your headphones. Driver Free, simply Plug and Play. USB bus-powered, no external power required.
  • [Premium Materials] - This 3.5mm to USB adapter tightly combined 20 Strands Cores, enameled copper, soft, and durable PVC covers. Its high-density shielding protection ensures high stability sound transmission and a soft touch. Nickel-plated USB has good heat dissipation, ensures stable and speedy signal transferring, and offers a long lifetime. Robust Sapphire Blue Metal Housing ensures a wear-resistant, anti-corrosion, solid protection, and charming out looking.
  • [Reliable Warranty] - MillSO offers a 12-month unconditional Warranty for all our products to guard against any unpredictable quality troubles or compatibility issues. You can extend it to 18 months by contacting MillSO 24-hour warm customer support team. We are more than happy to solve any problem for you!

Full Specifications

BrandMillSO
PlatformWindows
Model NameUSB Audio Adapter
ConnectivityUSB
Model NumberUSB352FFL-30U
CompatibilityPC, PS5, PS4, PS3, Xbox, iOS, Linux
Built-In MediaPVC
Audio Output ModeStereo
Hardware PlatformPC
Compatible DevicesPersonal Computer, PS4, PS5
Hardware InterfaceUSB
Maximum Sample Rate48 KHz
Hardware ConnectivityUSB
Signal-to-Noise Ratio120 dB
Surround Sound Channel Configuration2.0
Full listing titleMillSO USB Audio Adapter Stereo External Sound Card, USB to 3.5mm TRS Headphone + Microphone Audio Jack Splitter for Dual-Plug Gaming Headset to Laptop, Desktop, PC, PS4, PS5 [Built_in Chip - 1 FT]

Ready to buy?

MillSO USB Audio Adapter Stereo External Sound Card, USB to 3.5mm TRS Headphone + Microphone Audio Jack Splitter for Dual-Plug Gaming Headset to Laptop, Desktop, PC, PS4, PS5 [Built_in Chip - 1 FT] is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $9.99

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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MillSO USB Audio Adapter Stereo External Sound Card, USB to 3.5mm TRS Headphone + Microphone Audio Jack Splitter for Dual-Plug Gaming Headset to Laptop, Desktop, PC, PS4, PS5 [Built_in Chip - 1 FT]
$9.99
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