1-in-4-out Audio Signal Switcher Amplifier Preamp for Headset Headphone A908 aluminum black, by LC Prime When you have 4 broadcasting devices available (such as headphone and speakers) and would like to switch between them easily for playing music. This connection hub will be great for connecting them! Simply plug in players such as cell phone, iPod and computer to the switcher input jack, and connect the broadcasting devices such as headphone, preamp and speakers. Your connection is done.Included 4 golden-plated 3.5mm to 6.5mm speaker jack adapters, high-end looking and flexible for different usage! Independent volume knob for each of the four outputs, more flexible for adjusting different output. The Four-channel independently amplifying signal output. Our 1-in-4-out switcher and amplifier will help you to maximize the utility of speaker or headphone and let the listener get an enhanced experience of perfect music. WHAT YOU GET: LC Prime 1 X Amplifier, 5 X 35mm to 65mm Gold-plated Audio Converter, 1 X 35 to 35 Audio Cable. And our 60-day warranty and friendly customer service. Great choice for Black Friday, Thanksgiving & Christmas Gift idea.