4 Channel Portable Stereo Headphone Amplifier Professional Multi Mini Earphone Splitter Amp w/ ¼ Balanced TRS Headphones Output Jack and 1/4" Audio Input For Sound Mixer Pyle PHA40

4 channel stereo headphone amplifier Uses high-power stereo amplifiers for superior audio quality Comes with four 1/4" jacks, 12v dc jack (adapter included), and additional 1/4" audio input jack for connection with audio sources Control up to 4 headphones at once, and listen to audio in outstanding quality, with the pyle pha40 Measures width 4.07" width by 1.18" height by 2.24" depth