Avantree Quartet 2 - Wireless Group Listening Headphones System 2.4GHz Expandable Multi-Headphone with Low Latency & Clear Voice for TV, Church, Classroom, Silent Discos, Plug Play

[BROADCAST TO ALL 4 HEADPHONES] Connect the transmitter to an audio source and broadcast audio to all 4 headphones for a seamless audio sharing experience. [WIDE COMPATIBILITY] Connect the Quartet 2 transmitter to any audio source that outputs audio via Bluetooth, optical, or AUX, such as your phone, laptop, mixer, AVR, projector, TV, etc. [SCALABLE TO 100] Add up to 100 add-on Quartet headphones to the existing transmitter – perfect for silent discos, church PA systems, parties, outdoor movies, and more. [NO AUDIO DELAYS] With 2.4Ghz technology, the Quartet 2 reduces audio lag down to 25ms – significantly less than the 220ms of standard Bluetooth or even the 40ms of aptX-Low Latency. [INDIVIDUAL VOLUME CONTROLS] Adjust the volume of each pair of headphones with the built-in controls, without affecting the volume levels of others.