Alpine KCA-121B Auxiliary Input Adapter
Converts the changer port on Alpine stereos to an aux input
Item # 500KCA121B | MFR # KCA-121B
$15.99 Earn up to 16 Rewards points
Our take on the Alpine KCA-121B Auxiliary Input Adapter by Crutchfield's Charlie Pastorfield
The KCA-121B auxiliary input adapter allows you to convert the Ai-Net changer port on your Alpine stereo into an audio auxiliary input. One end of the adapter connects to your changer port, and the other end gives you a pair of female RCA jacks. Once connected, you can select the AUX source on your stereo and utilize the Bass Engine® sound-shaping functions to personalize the playback. 1-year warranty.
Note: When using the KCA-121B, a CD changer cannot be connected to the stereo; the KCA-801B auxiliary input adapter allows you to connect an auxiliary source and an Ai-NET changer to the stereo. The KCA-410C Versatile-Link Terminal allows you to feed audio from up to two auxiliary sources and two Ai-NET CD changers to the stereo.
Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.
Great product and price. I used it to hook up my ipod and when i installed it i noticed quality sound that i was lacking from my ipod with the fm transmitter settup i was using.
What's in the Box:
- AI-Net to RCA adapter
Alpine KCA-121B Auxiliary Input Adapter Reviews
Average Customer Review(s):
Thanks for submitting your review
Overview: The KCA-121B allows you to adapt the CD changer input of AI-Net controlling head units to RCA (aux) inputs. When using the KCA-121B, a CD changer cannot be connected to the receiver.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
Why did you buy this?
Will be using this on a CDA117E and will be attached to my XDP300R player [ John Patrick Jun 08, 2018 ]
Old school great quality alpine with new school aux input! [ Anthony May 25, 2017 ]
I have an Alpine CDA-9885 [ robert Apr 02, 2017 ]
Compatibility [ John Mar 02, 2017 ]
Quick link to blue tooth on an older unit [ Ty Jan 22, 2017 ]
Daisy recommend the aux [ osman Oct 26, 2016 ]
Friend [ dave Sep 27, 2016 ]
So that I can stream Pandora through my Alpine [ Brad Aug 09, 2016 ]
Needed it for 2004 Ford Escape so daughter could connect phone for music. [ Michelle Aug 09, 2016 ]
I purchased this product to expand the use of my Alpine CDA-117. This allowed me to use a bluetooth receiver that attaches to the rca connections. [ ERNESTO Jul 14, 2016 ]
11 questions already asked
I purchased this to use with the Alpine CDA-9856. I used it in conjunction with a blue-tooth receiver to stream from the phone using the aux in. I believe its considered Ai-Net interface. I'm not sure if its exclusive to Alpine or not, but if so, you'd need an alpine receiver for this cable to do you any good. If Ai-Net wasn't exclusive to alpine or if any companies partnered with them with the intent of pairing their factory components with say an alpine cd changer I'm not sure. If you have an aftermarket alpine receiver installed you should be able to look it up to see if it has the Ai-Net option. [ Tom Apr 03, 2018 ]
It fits an Alpine head unit, it is not vehicle specific. If you have an Alpine head unit without an auxiliary port, you plug it directly into the back of the head unit. [ Carlson Apr 02, 2018 ]
Yes, the KCA-121B allows you to adapt the CD changer input of AI-Net controlling Alpine head units (including the CDA-9855) to an RCA (aux) input. Hope that helps! [ Larry Apr 20, 2017 ] Staff
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your system information and give you the details on if this will work and anything else you may need for an installation in your vehicle. [ Kenny Jun 10, 2016 ] Staff
As long as the unit has a s-video connection on the rear and an input option for video in the menu then it should work. [ ERNESTO Feb 12, 2016 ]
If your receiver is AI-NET compatible (which I believe the CDA-7832 is) then the KCA-121B will be compatible with your receiver. It will connect to the Ai-NET port on the rear of the receiver. The Ai-NET port is where you would typically connect an Alpine CD changer. Keep in mind that the KCA-121B is only for passing an aux. signal to the receiver. It will not allow you to control the aux. device from the receiver. Hope this helps you out [ Gurmel Feb 09, 2016 ]
I'm using this, on my boat, with a iDA-100M marine head unit. It should work if your head unit has a cd changer input using the Ai-net port. Works great, I feed my auxiliary satellite receiver into it for Sirius radio underway. I have no need for CD's as I use an iPod touch to store music. Good luck! Mike [ Michael Feb 09, 2016 ]
It should fit with out a problem. [ jose Feb 09, 2016 ]
Not sure if this will help, but it worked with my CDA-7998 purchased in 2002. [ Kevin Jan 14, 2016 ]
Yes Patrick the Alpine KCA-121B Auxiliary Input Adapter will work with your Alpine CDA 5755.. [ Josh Jan 13, 2016 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your system. They will be able to research your receiver and see if this will integrate. If it does not, then they will also be able to discuss other options with you. [ Kenny Jan 07, 2016 ] Staff
Ya, I did the the same thing with mine. All you need in addition to this is an aux cord with the two male ends and then you can run your portable xm radio. [ DANE C Nov 24, 2015 ]
Yes as long as your Sirius radio has head phone jack out put or RCA out put. I bought it to play music from my cell phone. So I also purchased a 6 foot RCA to head phone jack to extend the cable . the alpine adaptor is very short. In all works well I don't know why I waited so long to buy it. I hope this helps. [ JOEY Nov 24, 2015 ]
For the most part,yes. You will connect this in the place of the ai-net cable for the CD changer and switch the auxiliary input to "on". [ Al Nov 24, 2015 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy Jun 28, 2015 ] Staff
I do show this as being compatible with the Alpine CDA-9883 CD Receiver. [ Jeff Feb 09, 2015 ] Staff
Yes it works on my 9886 just fine. I use it for an auxiliary input for my android phone. Once connected all you have to do is change the input via the head unit. [ ROBERT Sep 04, 2014 ]
I bought mine for the same deck... [ SARAH E Sep 04, 2014 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy Sep 04, 2014 ] Staff
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy Aug 04, 2014 ] Staff