4 out of 5
Dayton Audio KAB-INT Interface Extension Board for Bluetooth Amplifier Boards
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Pricing Note
Product Description
Manufacturer Part Number: KAB-INT
KAB-INT interface extension board puts the finishing touches on your Dayton Audio Bluetooth amp board project by conveniently adding a power switch, stereo 3.5 AUX in jack, and two USB ports for charging external devices.
Key Features:
Overview:
Dayton Audio KAB-INT Interface Extension Board for Bluetooth Amplifier Boards
The Dayton Audio KAB-INT provides a simple plug and play solution for custom applications. This interface board provides a 3.5 mm AUX-in jack, two USB A female ports for charging external devices, a momentary pushbutton switch that controls the standby function, and LED indicators for power and charging status. With the included 10-pin 20" cable, the interface extension board easily plugs directly into the KAB boards.
Note: The interface extension board is not designed to work with the KAB-215 Bluetooth 2 x 15W amp board.
Specifications: Board dimensions: 1.8" H x 2.4" L x 1" W including components Mounting holes: 0.14" Dia. Distance between mounting holes: 2.11" USB port dimensions: 0.58" L x 0.61" H x 0.55" W AUX jack hole: 0.3" Dia. x 0.55 W" Switch dimensions: 0.5" L x 0.7" H x 0.55" W.
Specification:
Manuals & Resources:
KAB-INT interface extension board puts the finishing touches on your Dayton Audio Bluetooth amp board project by conveniently adding a power switch, stereo 3.5 AUX in jack, and two USB ports for charging external devices.
Key Features:
- Adds many features with one simple connection
- Push button on/off switch puts amp in standby mode to save power
- Two USB ports have 2A combined charging capability for your media devices
- AUX-in 3.5 mm jack for connecting amp to non-Bluetooth sources
- Includes 19" interconnect cable for quick hook up
- Ground noise isolation eliminates unwanted sounds
- Two LED status indicators; red and green
Overview:
Dayton Audio KAB-INT Interface Extension Board for Bluetooth Amplifier Boards
The Dayton Audio KAB-INT provides a simple plug and play solution for custom applications. This interface board provides a 3.5 mm AUX-in jack, two USB A female ports for charging external devices, a momentary pushbutton switch that controls the standby function, and LED indicators for power and charging status. With the included 10-pin 20" cable, the interface extension board easily plugs directly into the KAB boards.
Note: The interface extension board is not designed to work with the KAB-215 Bluetooth 2 x 15W amp board.
Specifications: Board dimensions: 1.8" H x 2.4" L x 1" W including components Mounting holes: 0.14" Dia. Distance between mounting holes: 2.11" USB port dimensions: 0.58" L x 0.61" H x 0.55" W AUX jack hole: 0.3" Dia. x 0.55 W" Switch dimensions: 0.5" L x 0.7" H x 0.55" W.
Specification:
Product Details | |
|---|---|
| Brand | Dayton Audio |
| Model | KAB-INT |
| Part Number | 325-112 |
| UPC | 848791002564 |
| Unit of Measure | Each |
| Weight | 0.2 |
Product Specifications | |
|---|---|
| Board Type | Interface |
| Special Features | USB |
Manuals & Resources:
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Note
This product is not eligible for coupon code discount, for we've been offering the best price in the market.
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Customer Reviews
By JayVee
Date: December 08, 2025
If you have any of the Dayton Audio KAB amplifier boards and want USB for charging then you need this board. There's 2 USB ports that share 2 amps. So if you're just using one port then you'll get the full 2A but with two devices it's 1A each. There is also an AUX input if you don't want to use the Bluetooth on the amp boards. You get much cleaner sound and is a tad bit louder at the very same volume settings. There is an on/off switch but it acts more like a standby switch. This will not cut power to the amp board completely. To do that you'll need to put a switch inline between your power source and the amp board. A big downside is that there's no template available to make the cutouts. It's going to take a bit of trial and error to get the holes and ports aligned.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
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