This 2-in-1 3.4FT RCA audio cable for iPhone 5 to 14 series smartphones and other iOS mobile devices, supports power connection, upgraded smart DAC chip, gold-plated terminals, oxygen-free copper conductor, maintains clear stereo sound and lossless transmission.RCA audio cable is beautiful, lightweight, flexible (soft in winter), the cable has a braided mesh to prevent kinking, easy to use, and has a long lifespan! Simply connect your iOS mobile devices mentioned above to speakers, amplifiers, home theaters, etc. to enjoy beautiful HD music! Warm tips: Plug and unplug a few more times when connecting to the power supply to prevent dust from causing poor contact. 2. If the audio cable does not work properly, please try to upgrade the iPhone iOS version. If the version is too old, it may not be recognized or compatible with the product.3. The speaker does not have its own amplifier! You need to access an amplifier on the speaker preamplifier to have sound output!