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Avid Contributor III
April 11, 2026
Answered

Continue having trouble getting my laptop audio to play thru Sonos Amp 2.1 system

  • April 11, 2026
  • 25 replies
  • 190 views

Connecting laptop pc as an audio source via 3.5mm out on laptop to y’d rca phono ins on sonos amp 2.1...no sound coming out of sonos amp 2.1 system...laptop headphone audio meter shows strong signal. What am I doing wrong?..

Thanks so much…!!!! Bill

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Best answer by wirl

Hey Everyone…..thanks for the help...just talked with sonos...the solution was only one issue….line in was selected on phone sonos app (black icon) but not on computer sonos app (brown icon). now everything is all good...Thanks again..!!

Bill

25 replies

Stanley_4
Grand Maestro
April 11, 2026

The 2.1 throws me off as the Sonos Amp only has two channels of amplification.

It does have a line-level subwoofer output for connecting to an amplified subwoofer.

 

Found a lot of less than useful descriptions on resale sites, some thinking it was a v2 Connect Amp, not a new product. The 2.1 error and many others too.

jgatie
April 11, 2026

Dueling volumes may be at play.  Increase the volume on the laptop to alost max, then increase volume on the Amp.  You can also increase the input level on the Line-In of the Amp.

wirlAuthor
Avid Contributor III
April 12, 2026

Thanks jgatie….I’ve tried increasing all volumes...pc and amp and line input..

Airgetiam..glad I could satisfy you curiosity...any thoughts on my issue…?...Thanks...

kdowling
April 12, 2026

Can you play other Sonos sources on your amp and hear it on the speakers?

 

Are you sure your RCA to 3.5mm cable is ok? Do you have another to test with? It is stereo (has two black bands on the 3.5mm plug)?

 

You followed this: Play Line-in on your Sonos Amp

Airgetlam
April 12, 2026

Sonos aren’t really designed to be PC speakers, even though there’s a few folks in this thread who do so. Everyone who has already posted in this and your other thread has said the same things I would, I don’t have anything ‘new’ or ‘different’ to add. My major concern was none of us knew what an Amp 2.1 was. Knowing that it is a normal Sonos Amp, and not 2.1, I’d leave others to help.

 

Bruce
wirlAuthor
Avid Contributor III
April 12, 2026

Thanks...Yes I can...tv….youtube streaming from app…...I have tried 2 different 3.5 mm cable from headphone jack out on pc to rca in on sonos...yes..it is a stereo 3.5mm

Yes, I have followed directions and chose “computer” as source on line-in….as well as audioplay “on”...

kdowling
April 12, 2026

So you have a TV connected to the amp via hdmi? Is TV autoplay turned on? (I don’t know if this applies to the amp, it does other home theater devices) youtuble streaming from what app? The tv youtube app? What about a sonos source? Do you have any services setup in the sonos app? Apple music? Amazon? Local Library?

I think you need to describe your full sonos setup. We’re just guessing here as you haven’t really described how you have things set up.

Line-in is disabled if the amp is used as surround in home theater set ups. Is it set up like that?

wirlAuthor
Avid Contributor III
April 12, 2026

Gotcha...Thanks so much for the feedback, and sorry so vague...this is sorta new to me..!….

tv autoplay is on in sonos app

Group on autoplay is on

Youtube app on sonos is the source

I have no services set up except Youtube in the sonos app on my samsung phone...no services on amp

TV to amp via hdmi arc….amp to 2) 3rd party 8 ohm speakers as well as powered 3rd party subwoofer..sonos connect gen 1 is also part of the system, but currently has no purpose...Ethernet connected to both amp and connect1…

No sonos surround sound has been considered

Attempting computer to amp via 3.5mm stereo out from headphone jack (yes it works with wired headphones) to phono in on back of amp (l&r)...sound is perfect everywhere but computer, also ethernet cabled.

On sonos app: Home theater section.. Tv Autoplay on….Group autoplay on...Use IR on….Line In section.. Says connected (even though laptop is not currently), Source Name: Computer, Source Level: 8

Autoplay On

Any input is appreciated kdowling..!!

Bill

 

kdowling
April 12, 2026

The first thing I would do is turn off the autoplays until after you have everything working.

Next I would disconnect the HDMI cable from the amp until you get Line-in working.

Youtube app on sonos is the source

This is YouTube Music in the “Your Services” section of the Sonos app, correct?

...sound is perfect everywhere but computer

Does this mean you can connect something else using the 3.5mm-RCA cable and it works? Can you try with something other than your computer headphone out? I think this is going to be the most important test. If you can’t get anything to work with Line-In, maybe there’s a problem with the Amp and you need to contact Sonos Support.

Back to the computer… make sure you are playing music that is coming out the headphone jack on the computer and the volume is turned up first. In the Sonos app, make sure the Amp is the currently selected player and then select the Line-In source.

Let us know if there’s any progress. 

wirlAuthor
Avid Contributor III
April 12, 2026

Thanks…!!!...I will do and get back….