TOPPING HS02 USB2.0 Audio Isolator (Apos Certified Refurbished)


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This is an Apos Certified product. That means it's refurbished, like new, eligible for our 45-day return policy, carries an Apos Certified One-Year Warranty, and ships from our US facility. Currently, Apos Certified products are only available to customers with a US shipping address. We appreciate your understanding as we aspire to expand our offerings to a broader audience in the future.

Let’s bury ground noise

After painstakingly assembling your audio rig, there’s nothing more annoying than plugging in your headphones and hearing…ground loop noise. It can take hours to troubleshoot this issue—or no time at all with TOPPING’s HS02 Audio Isolator.

Fully-isolated design

The HS02’s fully-isolated design keeps your audio signal protected from interference, including the auxiliary power supply, stopping ground loop noise in its tracks.

This thing knows its ABCs

With inputs for USB B and C, and outputs for USB A and C, the HS02 can handle a number of interface scenarios. Simply plug in the cables you need and select the appropriate path with the input and output switches.

Ready for the Hi-fi life

The HS02 is compatible with high resolution audio such as 32-bit/768kHz PCM and DSD512 Native.

Need for speed

With a latency speed of 0.073us, the HS02 fully meets hi-fi and professional application needs.

Works with all power requirements

If your DAC receives audio information and power from the same USB cable, simply plug a 5V charger into the USB-C input of the HS02. Don’t worry: the auxiliary power supply will not add noise. If your DAC only receives audio information from the USB input, plugging a 5V charger into the HS02 isn’t necessary.

Product highlights

  • Reduces up to 50dB of ground loop noise
  • 0.074us latency speed
  • 32-bit/768kHz PCM compatible
  • DSD512 Native compatible


  • Audio signal isolation voltage: >1500KVRMS
  • Auxiliary power isolation: Yes
  • Inputs: USB-B, USB-C
  • Outputs: USB-A, USB-C
  • Dimensions: 5.9cm x 3.8cm x 1.8cm

What’s included

  • HS02 Audio Isolator
  • USB cable
  • User manual
  • Warranty card
Apos Certified

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