Hi @Edmac786, your KLH Twenty Four really vintage! I think you want to play the output of the turntable through your Sonos system? You’ll need a line-level output to do that, which might be the Record jacks. If those are indeed line-level (I can’t find more information online) you can use any Sonos device with line-level inputs, including a Connect or Port.

By chance, do you have a Sonos speaker with line-level inputs? If yes it would save you the expense of purchasing a Connect or Port. Which would be good, as this experiment may not work.

Thanks for the response/advice. Yes, it is REALLY Vintage, but it works great! All of my Sonos Speakers are Gen 1 (Play 1s, Soundbar, Sub and a Play 3). So no inputs. 

I did a little digging and it looks like the record jacks are for making tape recordings.

“It will play mono and stereo records and mono and stereo FM broadcasts. It has output jacks for making tape recordings, and you can play other music sources (such as a tape recorder or an AM receiver) through it.”

Do keep in mind that I am interpreting those RCA jacks as follows:

• Aux = line-level inputs … high confidence as the ‘Source’ switch on top has a ‘Aux’ position
• Record = line-level outputs … low-medium confidence as I cannot find any description

On the one hand, I’d say purchasing a used Sonos Port is the way to go. On the other hand, purchasing a new Sonos Port gives you the opportunity to return if the experiment doesn’t work.

Note that the Sonos Connect is vintage-like in Sonos years, and might find itself obsoleted in the not-too-distant future. So I wouldn’t spend a lot of money on a used Sonos Connect.

The speaker jacks have the potential to damage any line-level device you hook to them as the voltages needed for driving speakers are far too high for delicate inputs.

You might consider a used Connect too, cheaper than a used Port, but make sure you get one compatible with your other Sonos device’s version you don’t want an S1 only if you are on S2.