Check the listing for details. 1 RCA Ground Loop Isolator Noise Audio Filter for Car Stereo EQ Amplifier. Condition: New. Listed at 10.99 USD. Ground loop Isolator Noise filter for RCA This ground loop isolator integrates into the OEM system of your vehicle to eliminate ground loops for quality audio reproduction. Integrates into most vehicles' OEM systemsAudio transformers isolate RCA shields, creating an RCA output with floating grounds for clear audio.The GL301 eliminates ground loops from the source pre-amp outputs and reduces engine noise and DC current through the RCA cables. The GL301 uses an audio transformer for ground loop isolation, providing a 1.3dB gain and 0.5DB linearity from 20-20,000Hz Please Visit Our Store for More Best Selling Items : www.ebay.com/str/12vmaxelectronics Payment & Shipping: * PayPal only * Payment must be made within 7 days after purchase date Item will ship to buyer with in 2 days after payment cleared Will only ship to PayPal confirmed address * All packages sent to purchaser must have a confirm address if the package is returned by the delivery service as undelivered or insufficient information to complete address a fee variating from $3-$15 will be applied up on refund depending on the service and shipping fee paid by the seller.If the information provided by the customer affects the package(s) delivery we are not responsible for reshipping the order, a shipping fee must be paid in order for the seller to re-ship the package to the customer. Tracking number will be not available for international buyer by USPS First Class International, It usually take 7-15 business days. *If you don't receive your item, please contact us asap! RETURN POLICY: * Item must be returned to seller within 15 days * All return item must be in original package & unopened condition * Full price will refund to buyer after return item received in full new condition with original packaging, otherwise a re-boxing/restocking fee of 15% will be applied to the total refund* Buyer must agree with return shipping cost Shipping & Handling is not Refundable