Expert Xlr 1/4-Inch Ground Loop And Hum Eliminator For Sound System,, And Bass. Product Details Professional Hum Eliminator - Effectively isolate ground loop noise, eliminate interfering noise caused by extra long audio cables and phase differences between different audio devices, bring you clean and lossless audio. Safe Hot-Plugging - Helps secure transmission between audio devices, prevents them from being burned due to voltage differences or static electricity, also prevents the blasting noise when plugging or unplugging wires. Dual Channels Input Output - Adopts imported brand XLR interface, supports free input conversion between xlr and 1/4 inch cable and Independent xlr and 1/4 inch output port on the back, which can be used simultaneously as a 2-way splitter. Grounding Setting - With left and right independent ground to ground switches and common ground switch, which can avoid hum interference caused by grounding problems. Widely Application - This professional ground loop isolator is suitable for almost any electronic device you need to eliminate noise. Such as sound system, subwoofer, karaoke speaker, audio mixer, guitar, keyboard and so. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.