Having options is a great thing. And if you have a 2004 or newer Alpine satellite radio-compatible stereo in your dash, you have the option of using it to listen to SIRIUS.

SIRIUS created the SIR-ALP1 radio to work with the Ai-Net connection in Alpine stereos. The stereo will display channel information, including channel name, artist name, and song or program title. The radio also features a built-in pass-through, so you can still connect an Alpine CD changer, if you like. The SIR-ALP1 radio includes an antenna.

Note: A subscription to SIRIUS is also required. Satellite radio service is available only within the lower 48 states — not available in Hawaii or U.S. territories. Limited service is available in Alaska.

Product Highlights:

  • compatible with 2004 and newer Alpine in-dash receivers
  • roof-mount antenna with 20' cable included
  • single-cable antenna connection (dual-cable SIRIUS antennas are not compatible)
  • select channel name, channel number, artist, song title, or category name to appear on receiver's display
  • channel presets and channel scan/search
  • pass-through Ai-NET input for adding compatible Ai-Net components
  • tuner dimensions: 5"W x 1-3/8"H x 5"D (6-3/4" with cables connected)
  • warranty: 1 year
  • Our 60-day money-back guarantee


Average Customer Review:

35 reviews
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Sirius is great, but this receiver needs work

Written By Rob, Ypsilanti, MI on Thursday, October 11, 2007

I've had this unit for about 2 years now. I feel that this item is merely okay, not great. First off, the 16 character limit on the display is incredibly annoying, most song/band titles are cut off. Minor issue. Major issue, though is the durability/build quality of the item. After about a year and a half, it started to randomly cut out the right channel. After some troubleshooting, I had found that some of the solders on the circuit board had come loose during the natural hot/cold cycles that the interior of cars experience. This has forced me to replace the receiver far sooner than I feel is acceptable.


Written By mderris, Phoenix AZ on Saturday, March 31, 2007

Crutchfield Customer Review (What's this?)

Just installed today. Pretty simple and straight forward, although I must say Crutchfields master sheets are better than DEI's. So far couple dropped signals but seems to reaquire pretty quick. The Ai-net cable was actually the 8ft specified on the box(which actually was about 7ft longer than I needed), not the 3 foot some have written about. You can definatley tell your listening to a compressed format, especially on some talk channels. Overall decent quality and sound, but I think the antenna is kinda cheap, they could have included the higher gain micro Dot antenna I think for the price.

Great Radio

Written By Kenny, Where There Isn't Radio Other Than SIRIUS, WY on Tuesday, March 20, 2007

Awesome product. Installed in about an hour and is completely hidden under the dash all i do is press a button and i have CD quality(honestly its that good) SIRIUS playin through my alpine head unit with no extra eletrics visible. With my 6.5s and the Alpine 4x6s and a kicker sub all through a 300x4 amp it sounds spectacular.

Good product

Written By Matthew, State College, PA on Friday, February 02, 2007

The product so far is great. My only complaint is the fact that the cable is shorter than my clarion tuner cable. Therefore, I was limited with my install. The quality is fine. As for the previous rating stating FM quality: may be his setup because it is crystal clear in my Jeep.

Great unit...Why 16 characters??

Written By trigman, Washington DC on Tuesday, January 16, 2007

I love the unit and the sirius service. I never listen to terrestial radio anymore. The only drawback is the 16 character display issue. I know it is minor but it really bugs me! If they came out with an upgrade that would have all of the characters I would pay the money for it!!

Excellent Product

Written By Travis, Springfield, MO on Friday, January 05, 2007

Crutchfield Customer Review (What's this?)

I have been nothing but happy with Sirius since I subscribed. No, it doesn't have the most amazing sound quality, but most channels have at least FM quality. The talk stations don't sound great, but that's not what made me get Sirius so I'm not going to complain.

Easy to hide so that no one sees your expensive Sirius tuner sitting on your dash.
Easily integrates with current controls. I'm able to program stations I want, and use the up/down (on remote) to flip through them. Back and forth switches between stations. Exactly like you would do in AM/FM mode.
On-screen display. I don't have to look at a second display to see the song/artist.
Direct connection. FM tuners sound horrible.. that's all there is to it.

16 Character Limit - not major, but it doesn't make sense to have this limit.

I received a bad tuner the first time, but Crutchfield was quick to send me a replacement unit.

great tuner

Written By robert, Frederick, MD on Wednesday, November 01, 2006

I originally purchased this unit to use with my Alpine CDA-9835 it worked flawlessly even with the KCA-420i using the pass-thru. Now I have upgraded to the IVA-W200 and this thing really works great with this new head unit. But like most, the 16 character limit is a bummer.

Alot nicer than an FM transmitter!

Written By Bob, Kent, OH on Thursday, October 05, 2006

Crutchfield Customer Review (What's this?)

I'm using this with my CDA-9847 & an Ipod adapter. The Ipod adapter plugs into the pass-thru on the SIR-ALP1, which is plugged into the AI Net connector on the back of the head unit. Installation took all of 15 minutes, and that includes running the wires & hiding the unit under the dashboard on the drivers' side. The sound quality blows away what my Sirius FM transmitter was putting out. I'd rate it near-CD quality on most channels, at least the ones that I listen to. The 16 character display limitation doesn't bother me, as the artist is always mentioned by the DJ. Sixteen characters are enough most of the time, anyway.


Written By Tim, Mission Viejo, CA on Thursday, September 28, 2006

I bought this unit for my iva-w200 and I like it. It is a nice addition to my system. The only fault I can find is the text cutoff, kind of let down. But the sound quality is much better than fm, and if installed correctly, it is a good product.

Beware, won't support KCA-100BT

Written By matt, Bayside, NY on Friday, June 30, 2006

Crutchfield Customer Review (What's this?)

To verify reviewer below, unit will not support KCA-100BT, the bluetooth interface. It also not compatible with the KCA-410C the Ai-Net Multi-Changer/Versatile Link Adapter. A major flaw!

Software problem in current boxes

Written By mwhals, West Virginia on Sunday, June 11, 2006

The tuner sounds great through an Alpine 9857. The problem is that the tuner will not allow an Alpine CD changer to pass through it do to a software problem. As a result, I have a useless changer and a great sounding Sirius system.

Alpine says that the tuner with the software fix will be out in 4 to 8 weeks. If you are not using a CD changer with it or bluetooth with it, then get it as it is a good unit. If you are using bluetooth or a CD changer, then wait a couple of months to make sure the ones with the new software are shipping.

It's not Alpines Fault!!!

Written By hondasounds, NJ on Friday, May 19, 2006

This unit is ok. it has it's up's and down's. I have had a total of two of these units. The first want bad after 6 months. Alpine equipment is by far the best Audio equipment on the market...Quality, sound and functions. All my audio equipment is Alpine.. The Quality of the Siruis unit is good. Yeah, it cuts out once in while. but again not Alpine's fault.. All depends on where you are and what may be blocking the signal from reaching the units antenna.

Prepare for disappointment

Written By Rob, Hudson Valley, NY on Thursday, May 11, 2006

Crutchfield Customer Review (What's this?)

Platform - Alpine 9856.
This unit is just OK at best. Sirius in general sounds very compressed, so the sound quality is as expected. The receiver sensitivity is very poor. Reception cuts out under most overpasses, sometimes even under large overhead road signs. My girlfriend has the cheapo radar detector look-alike Sirius receiver, and hers cuts out far less frequently. The unit provides only 16 characters, as others have stated. Such poor quality. The designer should be ashamed (and broke!) for putting out a product with lack of concern for customer satisfaction. Why all connectors are not on the same side of the box is beyond me.

Must Have For Everyone With An Ai-Net Receiver!

Written By chris, Rochester, NY on Friday, April 14, 2006

I finally bought the SIR-ALP1 yesterday and was really nervous after coming here and reading all the bad reviews, but once I hooked everything up it sounded amazing. No distortion what so ever, doesn't sound like cd quality, more like mp3, but definately better than fm. The only down fall with the unit is like everyone else said, the 16 character limit, which is not a problem with your deck. I have an alpine cda-9855 which displays way more than 16 letters when I play an mp3 cd, so I was a little surprised to see that in sat mode it only displayed 16 letters. This is NOT somthing we can blame on alpine, directed electronics make these units for sirius, not alpine. If alpine made the tuner we would more than likely see the full names of songs. With that said I am more than happy with my 100 dollar investment, it's very easy to install if you know how to remove your deck should only take about an hour tops. I recommend this unit to anyone with an alpine deck. Mine doesn't even cut out when I go under bridges!

Best way to hear Sirius!!

Written By Arthur, Phoenix, AZ on Thursday, March 30, 2006

Crutchfield Customer Review (What's this?)

I had XM for about 3 years now using a direct connect Alpine Tuning Module. Of course, when I heard Howard Stern was moving to Sirius, I had to go to. I bought the Wireless Starmate to get me by and was fine with that, but then found I never listened to XM anymore. I finally got the Sirius tuning module for direct connection and I am sorry I waited so long! The clarity was about double of my wireless Starmate. I instantly heard a difference. It was so good I went out the same day and got another one for the other car. Install is a snap, Power, Ground, antenna, and connect to receiver using AI-Net cord. Cant see what on the other stations like you can with the Starmate, but thats ok. Also, I was told by Alpine that this unit works with older XM-Ready Alpine decks. I bought a new one for this and then when i bought the second one, i added it to my Alpine 7893 from 2002-2003 model year and it works just fine. It does say XM1 or XM2 on the display, but it does display the artist, title, station # or station name as well without a problem.


Written By Ryan, San Jose, CA on Thursday, March 16, 2006

Crutchfield Customer Review (What's this?)

I just bought an Alpine 9856 along with the SIR-ALP1. Like others have said, the main issue with this unit is the 16 character limit. Based on my research, this is an issue with the tuner, and not with the Alpine head units. Why they didn't upgrade this when Alpine upgraded their head units to have more than 16 characters is beyond me. I'm sure Alpine and Sirius will lose sales just because of this alone, so I think it would be in their interest to correct this.

Sound quality is also poor, it sounds completely muffled. Similar to a 64 kbps MP3, or maybe even a little worse. I think this is just the way Sirius sounds no matter what tuner you use. Hopefully Sirius will increase the quality of their broadcast sometime in the future, at which point everyone will benefit.

Overall, it does it's job fine. It's easy to hookup and install, however don't be shocked when you hear the SQ. Just because the music is digital quality, doesn't mean it's CD quality.

Poor Sound Quality

Written By E5150, Los Angeles on Saturday, February 04, 2006

For stern fans this thing is great! As far as music quality -- thumbs down. Its BELOW fm quality (ABOVE AM), some of the other reviews about this unit are DEAD ON. I have XM in my other car with a portable unit, and the sound quality is fantastic. I find myself using sirius only for howard, and switching to my ipod for quality sounding tunes. Sad, because the staions rock! (better than XM for rock and metal) Hands down - more of a selection on Sirius. If sound quality is not important then this unit is for you! Nothing against Alpine - thier decks and amps are the best! this unit does not due them justice.


Written By logo75, Ketchikan, AK on Thursday, January 26, 2006

Crutchfield Customer Review (What's this?)

This thing is awesome. I have it hooked up to an alpine 9827. Only downside is (if you call it that) that it only displays the first 16 characters. Other than that it's great. I had xm but being in southeast alaska the reception was VERY spotty so i tried sirius and it works all over the island.


Written By No, Hunterdon County, NJ on Sunday, January 22, 2006

Crutchfield Customer Review (What's this?)

Pretty good unit, easy to install. I have the CDA-9833 Alpine radio and the only disappointment is the text cutoff. But I believe that's the radio, not the unit. Otherwise, the only complaint I really have is that the signal gets dropped for a moment if I go under a bridge for a second or two. Although that just has to do with the satellite signal itself, not the unit. I do wonder if a bigger antenna would help. Anyways, I understand what others are saying about sound quality. SOME talk channels sound compressed, like channel 184 which is the only channel that works until you activate the unit. Stern sounds just fine. Music channels sound pretty good, no complaints there. I would definitely buy it again if I had too!

excellent add-on but plan your install.

Written By DSL, Northwest Indiana on Tuesday, January 17, 2006

Excellent add on tuner, the reception is clear and the tuner locks in within a second or two. There is a wide selection of channels and content for whatever your tastes are. The install is fairly straight forward; connect to your Alpine deck, the Sirius antenna, and power. One nice feature is the Ai-net pass-through. Essentially if you want to add a changer or ipod controller later, you can simply plug into the pass through instead of having to route another cable.

One note I should mention; Be sure you have an idea where you plan to install it so you can pick up anything additional you need. The antenna lead is extremely long. Enough if fact it was able to run from the front of my roof, around the top, into my trunk and to the control module I mounted on the other side of the trunk. On the downside the AI-net cable is only a few feet long. I was able to make from my CDA-9853, under my dash and to the B-pillar before i ran out of cable. While this would have been enough if I was installing under my seat, I had to buy an extension cable (KWA350B) to reach to my trunk. So if you're planning to install this anywhere other than within a few feet of your deck, buy the above extension.


Written By Jeremy, Clovis, NM on Wednesday, November 30, 2005

Crutchfield Customer Review (What's this?)

I have had this for a year now. I rarely listen to anything but Sirius. I read some reviews about the sound quality and I am surprised. Rarely does my music sound compressed. The quality for some of the talk stations/sports broadcasts sound compressed but I have learned to live with it. I added a sub and my deck is the Alpine 9835. The text cutoff is disappointing, but this is a limitation of the deck, not the Sirius tuner.


Written By Mark, New Jersey on Thursday, November 17, 2005

Crutchfield Customer Review (What's this?)

Purchased an Alpine 9847 along with Sirius and iPod connection. Installation is easy as long as you have the room in your dash. The iPod piggybacks off of the Sirius unit. How great is it to control everything from the head unit (sat and iPod). The sound is very disappointing for Sirius, if you are into sound quality, dont get Satellite. I tend to listen to cd, fm, iPod then sirius.


Written By MaRtYn, Monterrey, MEXICO on Tuesday, October 18, 2005

Excelent Quality
but......... only displays the first 16 characters ??????????????????????????????'
Why ????
I use my Alpine 9835
In The MP3 or CD text display 64 characters


Audiophiles will be pleased. Great sound quality!

Written By John, Boston, MA on Monday, September 19, 2005

Besides swapping out my SIR-ALP1 once (I purchased a very early version (had a preset issue)), I am very pleased. If your Sat radio is not perfectly clear, maybe there is something wrong with your system/setup. Sirius should never be compared to FM/AM; There is NEVER static. Once in a while, the signal will "get lost" (silence momentarily), but only when I go under power lines or in a deep valley or parking lot. Sirius has near perfect quality sound if you ask me, and I've been an audiophile for well over a decade.


Written By pirate, Dartmouth MA on Tuesday, August 09, 2005

The good of sirius is the commercial free music. however, the play lists are shallow and some of their ideas about music categories are bizzare. for instance, on the jazz fusion station they play paul anka and peggy lee fairly often, and little in the way of return to forever, or brand new heavies, or victor wooten or... you get the picture. but there is lots to choose from, so flipping through stations is usually fruitful.

sound quality is a little better than a clean am signal, but not much. if you can tolerate music from a computer's speakers (i am talking cheap computer speackers)...then sirius will pass. if you are looking for near cd quality, don't bother...the compression is oppressive. i listen to the talk stations a lot just b/c i can't tolerate the poor sound quality of the music. muffled highs and muddy lows. if you're in search of a high quality sound experience from this service, you've made a mistake

Sound quality is bad

Written By Alex, Tacoma, WA on Tuesday, July 05, 2005

Crutchfield Customer Review (What's this?)

Installation was easy, no problems encountered. Satellite radio has bad sound quality. The compression is just too much. It sounds like a low bit MP3. I would definitely say that a strong FM station sounds better. The highs are missing; it just sounds muffled. If you are interested in "near-CD" quality sound, forget it. The programming is good, but I still find myself listening to CD's until they get old, then FM until I hit commercials, then I switch to satellite. Also, I have a CDA-9830 and the 16 character limitation bites.

Good Except for a Major Shortcoming

Written By Paul, Scottsdale, AZ on Saturday, June 04, 2005

Crutchfield Customer Review (What's this?)

Bought this tuner along with the Alpine CDA-9851 head unit. Install is a breeze, and the satellite radio is nicely integrated with the head unit. However, a major limitation of this unit is that it only displays the first 16 characters (including spaces) of the song title when listening to satellite radio! I find this to be a major annoyance - since the display is capable of scrolling, why not show the entire song title?

Maybe I was spoiled with my previous Audiovox PNP3, which managed to display the artist and song title at the same time, but I think a flaw this major should not be overlooked.

Installs easy, works flawlessly, but...

Written By Frank, Bakersfield, CA on Thursday, May 05, 2005

It installs quite easily with my CDA-9847. I also have the Ipod integrater unit. Luckily there is lots of room in the dash behind my stereo so everything is out of sight, and I have quite an audio experience in my car from a modest looking head unit, very nice. However, I don't know if this has to do with the tuner or if it's just a Sirius thing, but I am not overly impressed with sound quality. Does not have the clarity of CD or even FM for that matter, it's a bit muffled sounding, I would say it's between AM and FM quality wise. I expected better for a direct connection like this.

After a glitch, very happy

Written By Scott, Carlsbad, CA on Friday, April 22, 2005

I had a problem loosing Sirius presets with my first SIR-ALP1 on my Alpine CDA-9835.

After several months of Alpine and Directed Electronics(maker of the SIR-ALP1) pointing the finger at each other, I finally found out it was a problem with early SIR-ALP1 units.

It was replaced under warranty and I'm now a 100% happy customer with both the Alpine CDA-9835 AND the SIR-ALP1. I also use the Alpine iPod interface, so with all three, it's great!

Sirius and Alpine, a match made in Heaven

Written By Ken, SE Florida on Wednesday, March 09, 2005

Crutchfield Customer Review (What's this?)

Just installed my new CDA-9833 w/this receiver. VERY easy install. Everything plugs together and you're good to go. I'm new to Sirius and if you've never heard it, I suggest you go to their website. Best $100 bucks I ever spent!

I love Sirius on my Alpine!

Written By Shawn, Princeton, MN on Saturday, March 05, 2005

I have listened to Sirius radio for months on my Dish Network thinking I would need to upgrade my head unit (2003 Alpine CDA-9807) to receive this programming. After learning that this Sirius tuner will work with most XM ready units, I bought one in a heartbeat and have not listened to FM since.
The service is nice and clear plus you get free online access to the channels (XM charges extra). The antenna is small and the supplied monster cable is great! The unit initially boots up as XM but changes to Sirius after 4 seconds or so.
I would highly recommend this product to anyone looking to utlize their Alpine satellite radio. By the way, XM is raising their monthly rates to match Sirius at $12.95 per month if the rates were a factor in your decision.

alpine sir.

Written By todd, west fargo,ND on Tuesday, March 01, 2005

I just bought this tuner.I must say simple installation and great sound.I also was converted from xm to sirius.hooked up to a alpine 9813 deck.the advantage to getting this tuner is that u dont have to buy a seperate convertor to connect(like xm).it will cost u more to buy your equiptment with xm and take more space.way to go sirius!


Written By zombiecock, Boston, KY on Saturday, February 26, 2005

Works flawless with with my Alpine CDA-9830. Sure beats listening to XM or FM.


Written By MICHAEL, Long Island, NY on Monday, February 14, 2005

Crutchfield Customer Review (What's this?)

This is a great tuner. The small compact size really helps when installing in a tight location. love the tiny antenna, but best of all, I get to have SIRIUS on my /////ALPINE head unit (CDA-9835). I was an XM subscriber until I heard SIRIUS. I am so happy with the SIR-ALP1. Get one, you won't regret it!!!!!!!!!!!!


Written By keith, Pittsburgh, Pa on Friday, February 04, 2005

Product installation is quick and easy. Instructions are clear with 1 exception. When hooking up the power connection be sure to connect to a "constant" on source rather than a switched connection.
The sound quality is excellent on this product. I am using this with an alpin cda7998 head unit.

Hands-on research

What's in the box?

Download owner's manual

  • Satellite Radio tuner
  • 3' Power harness (has in-line 5A fuse)
  • 8.25' Ai-NET cable (has an Ai-NET connector on each end)
  • Antenna with attached 20.75' cable (has a right-angle SMB connector)
  • 1 Rubber antenna cable cover/tail
  • 1 Section of double-sided tape
  • 6 Self-tapping screws
  • 1 Alcohol swab
  • Installation Guide
  • Installation Manual
  • Warranty sheet

Features and Specs

Service Sirius
Compatible Brand Alpine
Display Lines None
Channel Presets None
Song Memory None
Built-in FM Transmitter No
Car Kit N/A
Home Kit N/A
Changer Jack/Pass-Thru Yes
NavTraffic Compatible No
Included Antenna Car Antenna
Dimensions and Warranty
Width (inches) 5
Height (inches) 1-3/8
Depth (inches) 6-3/4
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research

Inputs and Outputs


Overview: When used with a compatible Alpine head unit, this tuner allows you to receive SIRIUS satellite radio programming in your vehicle. In addition to this tuner and antenna, you must have a subscription to SIRIUS Radio to receive SIRIUS digital satellite radio signals.

Note: Satellite radio service is available only within the continental United States. Service is not available in Alaska and Hawaii.

SIRIUS Satellite Radio: SIRIUS Satellite Radio features more than 120 streams of original programming beamed coast-to-coast, including 65 streams of commercial-free, digital-quality music, and news, talk, sports, entertainment, and children's programming.

Compatibility: This tuner is compatible with 2004 and newer Alpine satellite radio-compatible in-dash receivers that use the Ai-NET protocol.

CD Changer Pass-Thru: The SIRIUS radio tuner uses the CD changer input on the Alpine head unit. If you also want to use a CD changer, there is a CD changer pass-through connection on the SIRIUS radio tuner, so they can be daisy chained together.

SIRIUS Antenna: The SIRIUS antenna has a powerful magnetic base that allows you to mount the antenna on the roof or trunk lid of your vehicle. The antenna needs to be positioned in such a way that it will be free of mechanical and line-of-sight obstructions. 

Inputs and Outputs

Front Panel of Tuner:

  • Ai-NET Output: Ai-NET jack that connects to the head unit using the supplied cable
  • Ai-NET Input: Ai-NET jack that connects to an optional CD changer
  • Power: 4-pin jack for use with supplied power harness

Back Panel of Tuner:

  • Antenna: single SMB input

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.