The cylindrical, black HD77 speaker measures 7.3 inches in length and 3.0 inches in circumference and features two LED strips, one at each end of the speaker. They light up when in use, but generally appear to have only one color. Most of the speaker is covered with a black cloth grille. Underneath are two 12.5-watt drivers that deliver a frequency response of 80 Hz to 16 kHz. Passive radiators at both ends round out the sound. ..
The black HD77 speaker measures 7.3 inches in length and 3.0 inches in circumference and has two LED bands, one at each end of the speaker. They light up when in use, but generally appear to be only one color (blue when on, red when off, and green when charging). Most of the speaker is covered with a black cloth grille. Underneath are two 12.5-watt drivers that deliver a frequency response of 80 Hz to 16 kHz. Passive radiators at both ends round out the sound.
The bottom of the speaker has a covered USB-C charging port and 3.5mm aux input - both included. In addition to these cables, the HD77 comes with a carabiner. The speaker has an IPX6 rating, which means it is rain and splash resistant and can even be rinsed under the tap, but it cannot be submerged. It should be suitable for most outdoor situations where it might get wet. Treblab estimates the HD77’s battery life to be around 20 hours, but results will depend on volume. The HD77 is compatible with Bluetooth 5.0. ..
The HD77 headphones have poor sub-bass reproduction, which becomes apparent at low volumes. The distortion is also audible at high volumes, making them unusable. This is an example of DSP not working properly.
