【RCA Hi-Lo Converter SS-103 Adjustable Subwoofer Compatible】 This is the perfect RCA conversion adapter for those who want to add an external amplifier or subwoofer to their factory car audio system. It converts speaker output (high level) to RCA output (low level), allowing for easy connection of an external amplifier. With a volume level adjustment knob, you can optimally set the output level. 【Product Specifications】 ・Model Number: SS-103 ・Input: Speaker output (high level) ・Output: RCA terminals (low level) ・Terminals: Gold-plated RCA jacks (red/white) ・Output Level Adjustment: Independent dial adjustment for left and right channels ・Included: Wiring diagram (printed on the back) 【Features】 ・Converts factory speaker output to RCA signal ・Gold-plated terminals for stable signal transmission ・Allows for fine adjustment of left and right channel volume balance ・Clear sound output with suppressed noise ・Lightweight and compact design for easy installation 【Usage Examples】 ・Adding a subwoofer or external amplifier to a factory audio system ・Connecting an amplifier to a deck or navigation system without RCA output ・Line signal conversion during audio customization 【Notes】 ・Electrical knowledge is required for wiring. We recommend professional installation. ・Wiring methods may vary depending on the vehicle and amplifier. □About Shipping Shipping Method: Japan Post Delivery Days: Honshu: Next day, or the day after Okinawa, Hokkaido, and remote islands: 2 or more days *May be delayed due to bad weather. □About Defects Please contact us before giving a rating. We will provide 100% support for initial defects. *Cancellations/returns due to customer circumstances are not accepted.