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Pair of black rectangular desktop speakers with USB cable and volume knob

ottosing H21 2.0 USB Speaker 180 W Black

SKU CH-Y7CD-SQJ97

USB-powered 2.0 stereo speakers deliver 180 W total power with a 3.5 mm aux input for desktop, laptop, tablet or phone

  • TypeSurround Sound
  • Configuration2.0
  • Connector TypeUSB
  • Total Power180 watts
  • Satellite RMS Power /ea180 watts
  • Driverdynamic_driver
  • Full-range stereo sound from a 2.0 channel configuration
  • 180 watts total power for immersive audio
  • USB-powered plug-and-play with 3.5 mm auxiliary input
  • Touch remote and single-knob volume control
  • Compact 3.2 x 6.9 x 3.7 in design weighing .68 kg

USB-Powered 2.0 Speaker System

The ottosing H21 is a 2.0 channel speaker pair powered entirely by a 5 V USB connection and delivering a rated 180 W total output. Two satellite units connect through a 3.5 mm audio jack, making the set suitable for desktop PCs, laptops, tablets and smartphones that provide both ports. Touch-sensitive controls on the speaker handle power and volume without extra software.

Users Wanting Simple Stereo Without Extra Hardware

Buyers who need a compact stereo upgrade that draws power from an existing USB port will find the H21 convenient. The 1.2 metre inter-speaker cable allows flexible placement on either side of a monitor. Users who require a dedicated subwoofer channel, wireless streaming or a self-amplified system with higher low-frequency extension should consider other form factors.

180 W Total Power Rating

The headline specification is the 180 W combined power figure, which defines the maximum loudness the pair can reach. Frequency response is quoted at 75 Hz, indicating the practical bass limit of the drivers. Match this output level and bass floor to the intended listening distance and content type before purchase.

Highlights

  • Full-range stereo sound from a 2.0 channel configuration
  • 180 watts total power for immersive audio
  • USB-powered plug-and-play with 3.5 mm auxiliary input
  • Touch remote and single-knob volume control
  • Compact 3.2 x 6.9 x 3.7 in design weighing .68 kg

Specifications

Brandottosing
Model2-Way Speaker Black Pair Wall Speaker
TypeSurround Sound
Configuration2.0
Connector TypeUSB
Total Power180 watts
Satellite RMS Power /ea180 watts
Driverdynamic_driver
Frequency Response75 hertz
Power Supply5 volts
Remotetouch
System RequirementsDesktop, Laptop, Tablet, Smartphone
Dimension3.2 in x 6.9 in x 3.7 in
Weight0.68 kilograms
Package ContentsQuick Start Guide

Questions about this item

Is the 180 W rating continuous or peak output?

The 180 W figure is the total power rating; each satellite is listed at 180 W RMS, which indicates a continuous power specification rather than a peak value.

What real-world volume level does 180 W deliver for desktop use?

At 180 W total power with a 75 Hz low-frequency response, the system produces room-filling sound suitable for gaming, movies and music at typical desktop listening distances.

How does the USB power and 3.5 mm audio connection affect compatibility?

The speaker draws 5 V from a USB port for power while using a 3.5 mm jack for audio, so it works with any device that provides both a USB-A port and a headphone output — desktops, laptops, tablets or phones with a USB-C to USB-A adapter.

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