Professional Ktv Digital Pre-Effector, Audio Digital Effect, Performance Product Features Professional audio effect, with anti-howling button, 5 microphone inputs, built-in special effects smart chip, sensitive knob, metal shell. There are bass channel, middle channel, left channel, and right channel modes to give you a complete stereo experience. Widely used in: weddings, concerts, bars, business meetings, business activities, karaoke, family entertainment, outdoor performances and other occasions AUX audio input, optical fiber input, USB, Bluetooth input, support subwoofer output, center output, recording signal output and XLR output port. Equipped with an exclusive remote control, making user operation more flexible and convenient It fine-tunes various sound parameters by adjusting hidden knobs. It has delay, repetition, treble, midrange, and bass adjustment functions. It can adjust music details and voices, and can be adjusted with a screwdriver. Intelligent feedback suppression anti-howling: Built-in anti-howling module. It is recommended to turn on the FBX button to effectively suppress howling points and handle low noise and noise. It can prevent howling in various harsh occasions. Note that it does not eliminate howling. It can prevent howling to the greatest extent, which is enough to satisfy you Packaging list and warranty:FX-50RV mainframe *1, optical fiber antenna *1, remote control *1, us power cord *1, screwdriver *1, manual *1. A 1-year warranty is provided, and if there is any problem with the product, we will help. After receiving the product, if you have any questions, you can contact our customer service for help. The product voltage is 110V, and it is American plug. 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!