【SMALL HIFI BOOKSHELF SPEAKERS】SW-208 is a small bookshelf speaker with HiFi sound quality. It adopts standard bookshelf speaker system design, i.e. direct/reflective speaker system. Can be placed at will, can easily create a rich stereo sense and strong sound pressure. | 【30Wx2 CARBON FIBER SEPAKER UNIT】The speaker unit is designed with carbon fiber material and multi-layer voice coil technology, which is proprietary by Sanyun Company. It has excellent sound performance, warm and thick medium frequency, deep and powerful low frequency, clear and bright high frequency sound characteristics. And the speaker unit has a super durability and stability, can work steadily in any environment. | 【24bit DAC USB CONNECTION AND BLUETOOTH 5.0】Bluetooth 5.0 connection, stable transmission. When connecting with USB cable, the built-in 24bit DAC can obtain the digital audio signal from the device directly, reducing the loss of the signal from digital to analog, maximizing the restoration of the audio source itself, and providing the best sound Performance. | 【TREBLE AND BASS ADJUSTMENT】To achieve true HiFi sound quality, set the total volume, treble and bass adjustment knobs on the side of main speaker. Please adjust the most suitable sound according to your preferences, or adjust the best sound effect according to different sound types. | 【QUIET STANDBY AND ENERGY SAVING】 Built in noise elimination system. Built-in chip, intelligent filter input audio, automatic filter to remove noise, keep the speakers absolutely quiet while standby. The design standard conforms to EU ER2 standard, saving energy. A good speaker, not only can provide good sound performance, when not in use, can quietly let you forget its existence.