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Alpine KCA-121B Auxiliary Input Adapter

Converts the changer port on Alpine stereos to an aux input

Item # 500KCA121B

The KCA-121B auxiliary input adapter allows you to convert the Ai-Net changer port on your Alpine stereo into an...

Read more from Crutchfield writer, Charlie P.

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$15.99

About the Alpine KCA-121B Auxiliary Input Adapter

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.
Alpine Authorized Online Dealer

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.

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Alpine KCA-121B Auxiliary Input Adapter Reviews

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More details on the Alpine KCA-121B Auxiliary Input Adapter

Product Research

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.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Need RCA input into an older Alpine ida-X305S head unit for iPod input. My iPhone SE/iPad Mini 4 no longer work with the older iPod connectivity through the USB cable [ Benjamin  Jan 03, 2019 ]
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Will be using this on a CDA117E and will be attached to my XDP300R player [ John Patrick  Jun 08, 2018 ]
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Old school great quality alpine with new school aux input! [ Anthony  May 25, 2017 ]
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I have an Alpine CDA-9885 [ robert  Apr 02, 2017 ]
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Compatibility [ John  Mar 02, 2017 ]
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Quick link to blue tooth on an older unit [ Ty  Jan 22, 2017 ]
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Daisy recommend the aux [ osman  Oct 26, 2016 ]
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Friend [ dave  Sep 27, 2016 ]
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So that I can stream Pandora through my Alpine [ Brad  Aug 09, 2016 ]
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Needed it for 2004 Ford Escape so daughter could connect phone for music. [ Michelle  Aug 09, 2016 ]
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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 ]
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11 questions already asked

Q
does it fit an acura tl 2004 with no navigation?
[ daniel  Apr 02, 2018 ]
2 answers
A
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 ]
A
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 ]
Q
Will this work on Alpine CDA-9855?
[ BigDaddy  Apr 16, 2017 ]
1 answer
A
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
Q
Would this work on my CDs 9833?
[ Shane  Jun 10, 2016 ]
1 answer
A
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
Q
Will this work with cda-7832 circa 1990's?
[ Lou  Feb 08, 2016 ]
4 answers
A
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 ]
A
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 ]
A
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 ]
A
It should fit with out a problem.
[ jose  Feb 09, 2016 ]
Q
Hi, will this work with my Alpine CDA 5755?
[ Patrick  Jan 12, 2016 ]
2 answers
A
Not sure if this will help, but it worked with my CDA-7998 purchased in 2002.
[ Kevin  Jan 14, 2016 ]
A
Yes Patrick the Alpine KCA-121B Auxiliary Input Adapter will work with your Alpine CDA 5755..
[ Josh  Jan 13, 2016 ]
Q
Will this work with an alpine cde-9852?
[ Graeme  Jan 07, 2016 ]
1 answer
A
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
Q
I have an alpine CDA9856. Will this allow me to hook up a Sirius XM portable radio?
[ David  Nov 22, 2015 ]
3 answers
A
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 ]
A
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 ]
A
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 ]
Q
I have a Alpine DVA-9861, will this cable fit my head unit and allow me to hook up my iphone to it?
[ Josie  Jun 28, 2015 ]
1 answer
A
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
Q
Will it work on my cda 9883?
[ Luis714  Feb 09, 2015 ]
1 answer
A
I do show this as being compatible with the Alpine CDA-9883 CD Receiver.
[ Jeff  Feb 09, 2015 ]  Staff
Q
Would this fit my alpine CDA-9886?
[ Adrian  Sep 04, 2014 ]
3 answers
A
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 ]
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I bought mine for the same deck...
[ SARAH E  Sep 04, 2014 ]
A
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
Q
I have an alpine cda-9884 will this fit my radio?
[ gator  Aug 04, 2014 ]
1 answer
A
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
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