4 In 1 Out Mini Stereo Mixer, 3.5Mm Sound Selector Amplifier For Pc Laptop Specification: Product Features 4 In 1 Out: Stereo mixer that mixes four sound inputs into one stereo output. Each potentiometer controls the volume of each channel independently, and the volume does not affect each other. Easy To Adjust: Stereo mixer splitter has standard switch gear. With bass and treble controls, you can adjust settings to your needs and easily drive a variety of headphones and external amplifiers. Standard Design: Stereo splitter can directly drive headphones or connect power amplifier, the interface is 3.5mm stereo jack. The shell is made of high quality aluminum alloy, which is sturdy and . Input And Output Compatibility: Sound extractor input interface is compatible with PC, mobile phone, laptop, etc. The output is compatible with speakers, headphones, bar speaker and more. Safe: Working power of the mixer is DC 5V?12V DC5.5 x 2.1, and the magnification is about 2 times. The quiescent current is about 8mA. Using NJM3414 low voltage and high current, the maximum driving current is 70mA. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!