Lzsig Mini Audio Mixer, Stereo Line Mixer For Sub-Mixing, Ultra Low-Noise, Product Features [4 IN 1 OUT FUNCTION USE] - If you need a mini audio mixer with 4 channels of audio (wired or wireless dynamic microphones, electronic musical instruments, CDs, computers, game consoles, etc.) integrated into one channel output, this stereo line mixer is perfect for you. The stereo audio mixer can also be used as an extension when there are not enough channels to use. [LOW-NOISE] - LZSIG digital audio mixer has been upgraded to use a 12V adapter for the power supply, which effectively reduces the noise caused by the USB power supply. Equipped with 5 ROHM low-noise and high-quality operational amplifiers, it guarantees the highest sound quality, ultra-low noise, and distortion-free performance. [STEREO/MONO MODE] - The stereo(S)/mono9(M) mode of our line mixer allows for easy switching between input sources. Compatible with both 3.5MM and 6.35MM headphones, there is no need for converter adapters. [DYNAMIC MICROPHONE MODE] --- Different from other mixers, our audio mixer is equipped with an individual microphone input to collect your voice through a dynamic microphone in mic mode, and integrate with other input sound sources into one channel output. [AFTER-SALE SERVICE GUARANTEE] --- Enjoy a worry-free shopping experience with our after-sale service guarantee. Our 24-hour customer service is always available to help you with any questions or concerns you may have, and we will provide you with a satisfactory solution. 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!