BenQ treVolo S Portable Bluetooth Electrostatic Speaker REVIEW


Aside from being an exceptionally compact speaker, the treVolo S is electrostatic which means that it has a distortion rate that is one-tenth the rate of conventional speakers and no cabinet resonance. It delivers a natural, spacious sound from a very small device. The speaker also features dual woofers and dual amplifiers for an exceptional sound experience. If you have two of the treVolo S speakers, you can pair them together for ‘duo mode’. The speaker has a play time of up to 18 hours on a single charge. The treVolo S is NFC compatible and has a Micro USB port for charging purposes. In addition to being a charging port, the Micro USB connector can also send a pure digital audio signal directly to the speaker.

  • Bluetooth 4.2
  • Does not support AptX
  • Inputs: 3.5mm stereo input; USB audio (DAC)
  • Sound Mode: Pure/3D
  • LED Indicator
  • No Microphone
  • Dimensions: 63.2×157.5×96.3 mm
  • Weight: 2.2 pounds


I’ve had the pleasure of reviewing many speakers over the years, but the treVolo S was an entirely new category for me. I have never reviewed an electrostatic speaker so I was excited to see what it was all about. As a matter of educating anyone else who is not familiar with electrostatic speakers, here is a brief summary of what to expect from them.


The treVolo S is not your typical Bluetooth speaker. It features a unique design and provides a superior sound for users — no matter what they are listening to. I love its compact nature and the awesome weight that the speaker has. I can recommend this to those who appreciate high-quality listening experiences. The price is a little hefty at $199, but the quality of the product speaks for itself.




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