The Sonos Line-In can be a source for any and all Sonos devices in your system.

Unless I have made an error in configuring line in setting it looks as if I still need pre amp before I can get any volume from the record player into the era 100. At 100 max volume toucan just beghng to hear the audio track. I thought this was something I double checked for prior to ordering and I did not see any mention of continuing to need my Yamaha receiver with phono input/output. My record player has pre out rca jacks that line into the sonos usb c sonos line in adapter  3.5 Jack then along the c then into the speaker. Turned up and adjusted input setting in speaker but the slightest sound plays. I’ll give it whirl with the amp connected. 

Sonos is always expecting a line level input.
 

Some turntables have built in pre-amps that can provide that, others rely on the pre-amp built in to the receiver they connect to (and are labeled phono inputs on the receiver). If your turntable does not have a built in pre-amp, you’ll need to buy one to sit between the turntable and the Sonos.

Thank you for your reply.  One more thing, once I connected my phono player to my receiver and began to play, I then tried grouping my other rooms but am finding the signal to be mono. In order to get stereo playback when grouped I then need an additional speaker and additional line in connector attached to the respective audio channel?  Odd, as I have a stereo connection L & R into the additional AUX line in connector.  Aside from the obvious of getting new Play 5’s or a SONOS Amp.  I was hoping to limit all this jumping and jumping of products and line in.  Meh.

Each line-in is a stereo source.  You do not need to connect to two line-ins for stereo.  Make sure you are using a stereo mini plug for the connection.

Thanks again, your response came thru before I could delete.  I had a bad RCA in, swapped it out for a new one and its all good now. 

If your turntable works correctly plugged into your receiver's PHONO jacks then it does not have a pre-amp or it is switched out.

An easy test is to move the cables from PHONO  to CD on the receiver, if it sounds good there you have a pre-amp in the turntable and it is switched on.

Hello there,

I would like to play vinyl on Era 100 too and I would like to know, is it only working with the Sonos USB C to jack or I can use an other one ? 

Because I tried to connect everything and play from the Audio Technica LP60X but it didn’t work… 

Thank you so much if you have the time to answer and help me ! 

You need to use the Sonos adaptor. 

The Sonos adapter is analog to digital in.  Generic adapters are digital to analog out.

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Oh ok I thought the Apple one I have would be working… now I understand. Thank you for your response !