Specification Brand : WANSUPYIN BulletPoint1 : Stereo audio two-way input four-way output, can directly push four headphones or external amplifiers do not affect each other, BulletPoint2 : The power supply is DC5-15V, the magnification is 5 times (14db), and the potentiometer controls the volume of each output separately. BulletPoint3 : Using the high-current op amp NJM4556A from Japan JRC, the maximum output current is 70ma, which can provide good large dynamic fidelity output. BulletPoint4 : Input and output are 3.5mm BulletPoint5 : Material: motherboard PCB; shell aluminum alloy. ItemName : WANSUPYIN 2023 DC5-15V 4Way Audio Output Audio Mixer Sound Board Stereo Audio Input Headphones Amplifier ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electronic-component-audio-amplifiers Manufacturer : WANSUPYIN ModelName : YWBL-WH0qkz68a1ur ModelNumber : YWBL-WH0qkz68a1ur NumberOfItems : 1 PartNumber : WSUSQ084900001 ProductDescription : Feature: Stereo audio two-way input four-way output, can directly push four headphones or external amplifiers do not affect each other, The power supply is DC5-15V, the magnification is 5 times (14db), and the potentiometer controls the volume of each output separately. Using the high-current op amp NJM4556A from Japan JRC, the maximum output current is 70ma, which can provide good large dynamic fidelity output. Input and output are 3.5mm