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Speaker / Dialogue Speaker for Learning / treVolo U / Q&A

Crystal Clear Desktop Dialogue Speaker for Online Learning | treVolo U

  • treVolo Voice Engine – designed to focus on clear human voice reproduction

  • One-piece enclosure with duo driver and bass radiator design for best-in-class sound

  • High quality microphone gives the best voice reception with noise and echo cancellation


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Product Feature

  • What are the main advantages of using treVolo U in language learning?
  • treVolo U is the first Bluetooth speaker engineered specifically for e-learning. It has two unique features Enhanced Human Vocals and Safe Volume, as well as six distinct sound technologies (two-way speakers with dual drivers, high-sensitivity analog microphones, AEC: Acoustic Echo Cancellation, audio enhancements for sound clarity, custom sound modes, and Safe Volume) that combine to make its sound clearer so as to create the most immersive learning environment.


  • How long is the battery life?
  • Battery life will vary depending on how the speaker is used and the volume at which it is set, but under normal conditions treVolo U can provide up to 12 hours of battery life.
  • How long does it take to fully charge the battery?
  • It takes about 3 hours to charge the speaker to more than 80%. Please do not use other charging accessories to charge the speaker.
  • How do you charge the battery?
  • To charge the battery, connect the speaker to a powered AC (main) outlet using the USB charging cable and power adapter included in the package.
  • Can I play audio while treVolo U is charging?
  • Yes.
  • Can the USB Type-C cable be connected to a computer to transfer data?
  • No, the USB Type-C cable provided can only be used for charging and for firmware updates.
  • What are the power specifications for charging?
  • The power specifications for charging treVolo U is DC 5V/2A via Type-C interface.


  • Does treVolo U have built-in Bluetooth capabilities?
  • Yes, treVolo U has Bluetooth 5.0 capabilities built in, which allows it to be connected to other electronic devices or smartphones wirelessly.
  • Does treVolo U have built-in Wi-Fi?
  • No.
  • Can treVolo U connect to more than one Bluetooth device at a time?
  • No, only one electronic device can be connected to treVolo U at a time via its Bluetooth connection.
  • How do you connect to other devices as the audio source?
  • This product can be connected to other electronic devices in two ways: (1) Bluetooth 5.0; (2) 3.5mm audio cable


  • Does treVolo U have a microphone to record sound?
  • Yes, treVolo U is equipped with a high-sensitivity analog microphone with AEC: Acoustic Echo Cancellation to reduce interference from ambient sound and provide excellent sound quality.
  • In which mode does the microphone turn on?
  • When the sound mode is switched to Live Class mode (when the LED flashes), the microphone will be turned on. The microphone will only be turned on in this mode.
  • Can the microphone be muted?
  • Yes, to mute the speaker's microphone, first switch the sound mode to Live Class mode (when the LED flashes), and then press the volume up and down buttons at the same time. When the microphone is muted, the LED above the volume down key will turn red. To unmute the microphone, press the volume up and volume down keys simultaneously again.
  • How many sound modes are there to choose from?
  • treVolo U has 3 different sound modes, which can be used with different types of learning materials: 1. Music mode (LED = off): In this mode, the high and low frequencies are optimized to give the music a more beautiful texture. 2. Video Learning mode (LED = continually on): This mode is suitable when learning through videos as it strengthens the sound of the human voice in the video so that the listener can hear it more clearly. 3. Live Learning mode (LED = flashing): This mode is suitable when learning through broadcasts of live classes as it strengthens the vocals of the instructor and eliminates echoes, making the session go more smoothly (the microphone is turned on only in this mode).

Voice Control

  • Is there a voice-controlled assistant?
  • Yes, treVolo U has a voice control function, which allows you to control the functions of the speaker through specific voice commands. Voice control can also be used to activate the connected device's voice assistant (e.g., Siri, Google Assistant)

Product Specification

  • How heavy is treVolo U?
  • treVolo U weighs about 760g.
  • Is there any pre-installed educational content in the speaker?
  • No, to play any content, treVolo U has to be connected to other electronic devices.
  • Can an external SD card be used?
  • No, this product can only play content from other connected electronic devices.
  • Is there a dedicated app for treVolo U?
  • Yes, you can download and install the "treVolo U" app in the your mobile device's corresponding marketplace (e.g., App Store, Google Play).
  • Is there an automatic power off feature?
  • Yes, the Auto Power Off feature can be enabled or disabled in the treVolo U app.
  • What is the maximum detection range of the Safe Volume feature?
  • The sound volume sensor has a maximum detection range of 150cm and a detection angle of 27°.