PAC SOEM-4 is a car audio accessory that can help you to connect your aftermarket radio to your factory amplification system. It has a variety of features that make it a versatile and easy-to-use device, including:

• Exchangeable Wired or RCA - Input & Output Harnesses: This allows you to connect the SOEM-4 to a variety of audio sources and amplifiers.
• Input Audio Optimizing Circuitry: This circuitry helps to ensure that the audio signal is clean and clear, even when using low-level inputs.
• Integrated Wire Strain Relief: This helps to protect the wires from damage, ensuring a long lifespan for the SOEM-4.