I thought they sounded quite good for the price. They're more open sounding than the on-ear BackBeat 500 and have plenty of clarity with ample but not overpowering bass (in Balanced mode). In both listening modes I thought the bass lacked a little definition -- more so in Bass Boost mode -- and overall the headphones aren't quite as articulate, dynamic or rich sounding as higher end models. So they're good, but not that good.
As you might expect from Plantronics headphones they do work well for making calls, although they don't have a sidetone feature that allows you to hear your voice in the headphones as you talk. Battery life is good at around 18 hours at medium volume levels.
For the money, I liked these headphones a lot. They're lightweight, comfortable to wear, sound decent and work well for making calls. They didn't blow me away, but they're as good or better than a lot of wireless headphones in this price range.
Here's a look at the BackBeat Go 600's key specs, according to Plantronics:
- Rechargeable battery delivers up to 18 hours of wireless listening time
- Connect at up to 33 feet (10 meters) to Bluetooth-compatible phones and tablets
- Earcups fold flat for storage in an included carrying pouch
- Also included: An audio cable for wired listening, even if the battery is dead
- On-ear controls for pause/play, skipping tracks, adjusting volume and taking calls
- Wideband-enabled microphone for making calls
- Answer calls or accesses Siri, Google Now and Cortana hands-free via voice command
- Available for $100 or £90 in four colors: black, khaki, navy and gray.