That really sounds like you connected the turntable cartridge directly to your Port without the required RIAA Phono pre-amp that changes the cartridge signal to a line level signal and applies the RIAA equalization needed.

If the turntable offers a pre-amp option make sure it is enabled, otherwise a stand-alone RIAA Phono preamp will be needed. Do make sure it matches your cartridge type, MM or MC or you’ll still have sound problems.

What model turntable do you have? Have you tried setting the Source Level higher under the Line-In settings in the Sonos app? Also be sure to set the Audio Compression setting to Uncompressed.

Toggling compressed will not restore things back to how they should be, seeing how stark are the differences referred to. All other suggestions in both posts are valid, but if they do not change things, there may be something wrong with the way the TT arm is set up, such that it may not be giving the chance to the cartridge needle to perform properly in the groove. 

That’s the thing with vinyl, all this tinkering. For those that do not like to tinker with their kit, vinyl/TTs are best foregone, and music obtained from better sounding digital audio tech. 

Yeah maybe I need a pre-amp. I did change Source Level to High, and I can hear everything, there’s just absolutely zero bass. Maybe I need the pre-amp, just didn’t realize it. I’m a vinyl noobie lol, only have 1 record so far (Led Zeppelin!!). 

It’s not “maybe” at all, you DO need a pre-amp.  When an LP is recorded, it is RIAA equalized, increasing the highs and attenuating the lows in order to improve sound quality, and increase LP life by minimizing needle damage.  A phono stage preamp, either internal to the turntable, between the turntable and the line-in, or built into the device that takes the phono input, reverses the RIAA equalization and converts it to line level.  Since the Sonos Line-in is for line level signals only, somewhere between the Sonos Line-in and the turntable’s LP, you are going to need a phono preamp.

Got it. Good to know. Thank you!

My turntable sounds great with this connection. I do have a fancy turntable and pre-amp (sort of a joke where I am the butt of the joke!). I use it “uncompressed”, and I use the maximum buffering/delay to avoid dropouts. It doesn’t sound as good as my old $40,000 “stereo”, but it sounds pretty good.

Pre amp is the answer. I had exactly the same until someone told me that the more expensive the turntable the less likely they are to be pre amped!

Can I please confirm, if connecting through a Sonos Port (and using a pre/phono amp) you can in fact play audio from the turntable to any speaker or all speakers in the network (Sonos speakers of course) ?? 

@madmediaman

Yes you can. On the speaker you wish to use just select line in as the source. Features like grouping work as normal.