When you are hooking up equipment like a powered amplifier to a car audio system and your deck doesn’t have the proper connections for an amplifier, you will need to use a high/low impedance converter. Audio signals are sent from a head unit by a high-level signal or a low-level signal. A high-level signal is an amplified signal like the one sent to your speakers, a low-level signal is a nonamplified signal sent out of the red and white phono outputs. Writer Bio
