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.

Ground loop noise killer 

If you’re hearing hum in your audio system, the TOPPING HS01 may help. It’s designed to electrically isolate your DAC from your computer, eliminating the noise caused by the power flowing through the ground connection.

USB 2.0 high speeds

The HS01 supports high speed USB 2.0 transmission, which is compatible with high-resolution audio transmission such as PCM 32bit/768kHz and DSD512 Native.

Low latency

Unlike many USB devices, which have a latency of 5 to 20 milliseconds, the HS01 has a latency of only 0.29 microseconds, which fully meets the needs of audiophile applications.

Eliminate ground loop noise

The HS01 can reduce ground loop noise by up to 50dB in real world scenarios.

Product highlights

• Prevents ground loop noise between source and DAC
• Compatible with high-res audio transmissions
• Low latency

Specs

• Dimensions: 0.9 x 2 x 0.35” (2.3 x 5.3 x 0.9cm)

What’s included

• TOPPING HS01
• USB cable
• User manual
• Warranty card

What pairs well

• TOPPING D90SE
• TOPPING D50s DAC
• TOPPING E30