PAC AmpPRO SUB APSUB-FD21 Subwoofer Amplifier Interface for Select Ford Sony & B&O Vehicles

The PAC AmpPRO SUB APSUB-FD21 subwoofer amplifier interface gives a compatible factory audio system a clean, controlled preamp signal for an aftermarket subwoofer amplifier or powered subwoofer while keeping the original radio and supported factory audio functions.

At a Glance

• Vehicle-specific interface for adding bass to a supported factory amplified audio system
• Two non-fading subwoofer preamp outputs with selectable 4- or 5-volt RMS level
• Includes a wired level control for adjusting aftermarket subwoofer output from the front seat
• Provides a data-controlled remote turn-on output for the aftermarket amplifier
• Retains supported factory radio controls, chimes, prompts, Bluetooth and communication audio
• Aftermarket amplifier or powered subwoofer, power wiring, RCA cables and installation materials are sold separately

Exact Vehicle Compatibility

Use the table below to match your vehicle and factory audio equipment. A year and model match by itself is not enough—the factory amplifier, premium-audio system, radio connector, screen and option details shown for the application must also match.

Compatibility & Installation Requirements

• Factory system: compatible data-bus-controlled factory Sony or specifically listed B&O premium amplified system.
• System design: This interface adds subwoofer-level outputs; it does not replace the factory radio, factory amplifier, aftermarket amplifier, or subwoofer.
• Signal and power: The aftermarket amplifier or powered subwoofer requires appropriate power/ground wiring and RCA signal cables.
• Programming: Use current PAC firmware and follow the current application guide for the exact vehicle.
• Requires a supported data-bus-controlled premium amplified system.
• The factory radio and factory amplifier must remain connected and operational.
• The exact Sony or B&O application must match the vehicle row.
• Professional installation and system tuning are strongly recommended.

Technical Specifications

What's Included

• One genuine PAC AmpPRO SUB APSUB-FD21 interface module
• Manufacturer-supplied vehicle-specific connection harnesses for this exact part number
• Wired subwoofer-level control and connection lead

Sold separately: aftermarket subwoofer amplifier or powered subwoofer, amplifier power/ground wiring, RCA cables, subwoofer enclosure and general installation materials.

Fitment disclaimer: Verify the exact vehicle, factory radio, premium-audio brand, amplifier, connector style, screen, firmware and option content before ordering. Product photos show the listed interface package; surrounding installation equipment is not included. Contact MCOR Automotive through the chat button for application help.

Why Buy From MCOR Automotive

• Authorized PAC retailer with manufacturer-backed warranty support
• Vehicle-specific compatibility help before purchase
• Professional car-audio integration, tuning and installation support