Desktop Speakers and Soundbars

Channels and watts: reading 2.0, 2.1 and RMS

The channel label tells you the layout. A 2.0 set is a stereo pair, 2.1 adds a subwoofer for bass, and 5.1 uses five speakers plus a subwoofer, which needs a source with multichannel output. For power, compare RMS watts per speaker, the continuous rating, rather than peak or combined totals, which can read much higher. Higher wattage helps in a larger room but says little about clarity. A small desk pair at moderate volume rarely needs more than a few watts per channel.

What the USB cable carries, and what powers the speakers

Check whether a USB cable carries sound or only power. Some speakers take audio over USB and have their own digital-to-analog converter, others draw 5 V from the port and still need a 3.5 mm audio cable. Bluetooth saves wires but adds a small delay that can show up in video and games. Soundbars sit under the monitor, so measure width and height, and check the input you will use, such as optical or HDMI ARC. Passive bookshelf pairs need a separate amplifier, while powered sets do not.

Questions about Desktop Speakers and Soundbars

Do I need an amplifier for desktop speakers?

Not for powered speakers, which have an amplifier built in and just need wall power or USB power. Passive bookshelf speakers do need an external amplifier or receiver. Check the listing for the words powered, active or passive.

Can I connect a soundbar to a PC monitor?

Yes, usually through 3.5 mm, optical, USB or Bluetooth. HDMI ARC works only if the soundbar has an ARC input and the monitor has an ARC-capable HDMI port, which many monitors lack, so check both.

Why do my speakers hum or buzz?

Common causes are a ground loop between the PC and the speaker's power supply, noise from a USB port, or an unshielded cable running beside power cords. Try another USB port, a shorter shielded cable or a ground-loop isolator.