The 16-Channel Wireless Microphone Karaoke Mixer System From Sound Town Product Features FLEXIBLE CONNECTION OPTIONS: the receiver has one 3.5mm (1/8?) TRS and one optical input connector, one 3.5mm, 6.35mm (1/4?) TRS and one optical output connector for easy setup with your home theater or speaker system. It works with a wide range of sound bars, home receivers, speakers such as Bose, Sonos and etc. SUPERB SOUND QUALITY: with optical (Toslink) input and output connectors, the karaoke mixer system can easily connect to a wide variety of smart TVs, soundbars, home receivers, and external speakers such as Bose, Sonos, Vizio, Samsung, and more. Please kindly note following instruction to improve sound quality. 1. Adjust your external sound bar/speakers? volume to max level; 2. Adjust the mic?s volume knob to max level; 3. Adjust the main volume knob on the mixer to below mid-level. INTERFERENCE FREE: the wireless microphone system comes with Ultra-High Frequency (UHF, 550-590 MHz) which is less likely to get interference from other equipment compared with a VHF system. It has 16 selectable frequencies (8 frequencies each channel) and is compliant with the latest FCC regulations TWO IN ONE: the wireless microphone receiver is also a sound mixer and equipped with rotatory controls which allow you to adjust echo, tone and volume of the mics; It?s ideal for conferences, broadcasting, weddings, karaoke, social events and any small to medium-sized venues such as meeting rooms, auditoriums, schools, churches and small stages 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!