The AP4-GM61 provides 6-channel pre-amp outputs (front and rear, left and right, along with a center channel output and non fading output for subwoofer output) for use with aftermarket audio equipment. Using the full range, fixed level head unit output, in conjunction with MOST, the AP4-GM61 delivers variable 5v RMS pre-amp outputs with fading, balance, equalization, and level control capabilities.

The module also retains all audio from other vehicle features such as factory navigation prompts, Bluetooth, OnStar, parking sensor chimes, safety alerts, reminders and infotainment. A data controlled remote amplifier turn on wire is also provided by the AP4-GM61. The module also provides a variable 2-channel fiber optic digital audio output (TOSLINK).

Compatibility Notes:

• Must have BOSE factory sound system.
  
• Must have Infotainment system RPO code IO5 or IO6 to be compatible.
  
• To verify the "IO" RPO code on your vehicle, check the glove compartment or spare tire well for a silver sticker with these codes. If this sticker is not present, you must scan the QR code on the GM label found in the driver's door jamb. The RPO codes will be listed in alphabetical order in either scenario.

Important Notes

• This interface is only compatible in vehicles equipped with both Bose and the IO5 or IO6 8" radios. To verify the "IO" RPO code on your vehicle, check the glove compartment for a silver sticker with these codes. If this sticker is not present, you must scan the QR code on the GM label found in the driver's door jamb. The RPO codes will be listed in alphabetical order in either scenario.
  
• The factory amplifier must remain in the vehicle, and connected, after the AmpPRO has been installed.
  
• The remote output is rated at 2A of current. If more current is needed, an external relay must be used.
  
• The remote output will be active whenever the vehicle's CAN-bus network is active (example: if the doors are unlocked from key fob). Even if the radio is not on, the remote output may be active. The remote output will turn off once the vehicle's CAN-bus network goes to sleep. To verify, turn the ignition off, close all doors, and wait 5 minutes, then check if the amplifier is on without opening the vehicle's doors, trunk or tailgate.
  
• Channel 5 is a variable volume, center channel output, and is derived from the in phase audio from the left and the right channels. The center channel output level can be adjusted using the AmpPRO PC application. Please refer to the Setup and Configuration section on page 3 for more details.
  
• Channel 6 is a non-fading output (typically used for subwoofers). The output level of channel 6 can be adjusted at any time using the supplied level control knob. When the non-fading level control knob is not connected to the AP4-GM61, the output level of channel 6 will always be at maximum.
  
• The level control knob must be connected in order to manually adjust the chime volume and minimum volume settings.
  
• The chime level in the radio's settings menu will not affect the chime level output from the AP4-GM61. Any chime audio provided by the AP4-GM61 requires the chime level adjustment to be done using the procedure provided in the Setup and Configuration section. If the factory amplifier is being used for the front or rear speakers, the chime level for the factory amplified speakers must be adjusted in the radio's settings menu. In some cases, it is necessary to adjust the chime level through the radio settings menu as well as through the AP4-GM61. For example: If the AP4-GM61 outputs are only being used on the front speakers, and the vehicle has rear parking sensors, adjustments would be made through the radio settings and through the AP4-GM61. In this instance the rear parking sensor chime level would be adjusted through the radio settings menu (since the reverse chimes play through the rear speakers), and any chimes coming through the front speakers would need to be adjusted via the AP4-GM61.
  
• By default,the chime volume is set to 60 percent (adjustable in 5 percent increments from 0 to 100) and minimum volume is set to 0 db (adjustable in 2 db increments -20 db to +20 db). If you are happy with these levels in your particular application, then no further adjustment is necessary. Please refer to the Setup and Configuration section on page 3 for more details.
  
• The factory radio's speed controlled volume and surround sound modes are not supported by the AP4 outputs.
  
• When using the TOSLINK output, all chimes must be routed through the front output by setting DIP switch 1 on (down).
  
• No adjustments can be made manually using the programming button, or the factory SWC when the module is connected to a PC.
  
• If the aftermarket amplifier requires 2 channels of input from the non-fading, channel 6 output of the AP4-GM61, an RCA "Y" adapter is required.

Shipping Policy

DBs Car Audio is proud to offer fast & free shipping on all items listed in our store!!

Shipping Methods and Transit Times

DBs Car Audio ships orders from our Kissimmee, Florida location. On occasion, orders will be fulfilled directly by the manufacturer or distributor in order to reduce the shipping time..

Order Tracking

Once an order has been shipped, we send our customers an email with the tracking number for the order. Click on the tracking link in the email to follow the location of the package on the carrier's website. If you did not receive a tracking number by email or need to confirm the tracking information, please contact call us at 1-800-927-9390

Signature Required

Due to the valuable contents of some shipments, DBs Car Audio will only require a signature upon delivery if the order is over $500. Such guidelines will not be overruled upon the customer's request. Please understand that this is a security measure taken by our Company to ensure the safe delivery of each package and guarantee excellent service. Many of our third-party shipping carriers and payment companies require signatures upon delivery to protect against fraud and theft. Customers may request a signature upon delivery by emailing us at dbscaraudiofl@gmail.com.

Shipping Policy Disclaimer

Delivery estimates do not apply to items shipped directly from the manufacturer, nor out-of-stock items. Some items that ship from the manufacturer can only be delivered to addresses within the 48 continental states.

Standard delivery time for domestic customers will average from 2-4 business days, but can take longer in some cases. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Our Shipping Guarantee applies only to shipments delayed due to our service failure. We will not guarantee shipments that are delayed due to an act of god (ex: weather), a catastrophic event, or failure by our delivery partners. Our guarantee is also voided if incorrect billing or shipping information is given and results in your order being delayed to its destination. Our guarantee is also void if no one is available to sign for shipment when delivery attempt is made if a signature is required.