4 Channel Portable Stereo Headphone Amplifier Professional Multi Channel Mini Earphone Splitter Amp w 4 ¼” Balanced TRS Headphones Output Jack and 1 4" TRS Audio Input For Sound Mixer Pyle PHA40 BLACK 6X6X5 Size:6X6X5 puffy eyes or quick breaks Color:02 Black Black Black Black Black Black puffy eyes or quick breaks to restore and relax naturally These ferrules can also be used for other adaptations like bathroom stools The Pyle 4 Channel Portable Stereo Headphone Amplifier is a professional grade mini splitter amp designed to power up to four pairs of headphones simultaneously INDEPENDENT VOLUME CONTROLS: Each listener can determine their own volume level using the dedicated output level controls