For information, my electric field meter is a tenmars TM-195 :

The wired mode and a good ANC are my criteria of selection.

Isn’t the signal you’re seeing just the Ace .BLE beacon, that allows connection to the Sonos App on say a mobile phone or tablet, even if it’s not Bluetooth paired with that phone/tablet, so that a user can go onto adjust EQ (Bass/Treble), Spatial Audio, Head Tracking, other settings etc? The settings that are not available via the hardware buttons on the Ace itself.

The only Sonos folks who post in this forum are moderators, not engineers. They may be able to pass on the question, but I wouldn’t think you’d get a quick reply, if at all. 

Not sure what “high” and “low” would mean in this case, but if you are afraid of radiation maybe using a bluetooth/wifi enabled headphone isn’t the best of ideas?

Exactly what are the advantages of using the Sonos Ace over some quality wired headphones which do not have Bluetooth or WiFi if you are only going to use them wired? 

Thanks,

I think effectively the Sonos Ace continues to communicate in Bluetooth to use the Sonos application : this allow to configure it (equalizer, head tracking, ...) but the sound is transmit by wired. There is no airplan mode.

With my old headphone, in wired : Only volume, next/previous music and ANC on/off are available.

From french user guide :.

"Le Bluetooth est désactivé lorsque Sonos Ace est connecté à un appareil avec un câble USB-C. La lumière affichera un blanc fixe."

Thanks,

I go to ask directly to Sonos by mail.

I work in an open space and I need a good active noise cancelling. Do you know other models only wired, with ANC and at this price ? Me, not.

Sonos Ace is a very good product but it's a problem for me. For example, I have 10V/m at 5cm of my box wifi (I don't know if it's the same frequency).. Electrical radiation can cause tissue heating.

​@SebMoi 

I’m really not understanding your issue as it appears it could have been easily avoided.

1. The Ace was designed as a headset to audio swap with specific Sonos sound bars
2. The Ace also offers BT connectivity with a source that can transmit audio to them via BT
3. The Ace also offers connectivity via USB-C to an audio source

You obviously have a specific use case for headphones which is number three (3) above. That said why did you purchase the Ace knowing it has BT capability that you prefer not to use; as there are plenty of wired headsets with no BT capability on the market? 

Click here for wired headsets with no BT

You are off topic.

Off topic???? 

This is what you wrote…. 

• “I work in an open space and I need a good active noise cancelling. Do you know other models only wired, with ANC and at this price ? Me, not.”

However, if you believe I’m off -topic….then so be it.  I'll not add anymore to this thread. Good luck to find what you’re looking for.

Come on. You use a Sonos headphone out of context and literally ask for a list of noise cancelling headphones without bluetooth. I’m not prepared to start a discussion about the the tissue heating effects of bluetooth, but if you do not want this kind of radiation you should not have bought a wireless headphone. Even without bluetooth (probably the BLE that Sonos never turns off) with the USB-C connector the headphones are battery operated, which could also cause electrical effects.

The topic is : "Impossible to stop Bluetooth with usb-c to jack cable"

I seach a solution or a support contact for my Sonos Ace because I love it (the best active noise canceling for open space), not other.

The user manuel says :

"Note that the Bluetooth functionality of the Sonos Ace is disabled when connected to a wired audio source. This means that you cannot adjust the settings of the Sonos Ace in the Sonos app as long as a wired audio source is used. To access the Sonos Ace settings in the app, disconnect the USB-C cable from the Sonos Ace, and then wait for it to reconnect to your mobile device."

It's false, I think it's a software bug.

An old Bose QC35 do it (airplane mode) with ANC always on.

Normaly use the câble is most good to save battery, for the sound (no codec compression), for no radiative EMI and I can use ANC.

Here, a person who thinks that the Bluetooth is off in wired mode and stop the bluetooth or the SONOS application of his phone : It's as he puts a wifi box in his head during several hours.

I think it's easy to correct this in a new firmware, if there is no other solution.

Hi ​@SebMoi 

Welcome to the Sonos Community! And, thanks for your post!

Sorry to hear of this issue you are having.

The quoted text does indicate that you will not be able to use Bluetooth connections when Ace is connected to a device via USB, but at no point does it say that Ace’s internal radio is deactivated completely, resulting in no Electromagnetic Radiation (EMR) whatsoever.

If EMR is a thing that concerns you, I have to side with the other posters here - return your Ace for a refund (assuming you are still in the Money Back Guarantee period) or sell it and purchase headphones that do not have Bluetooth (or WiFi) functionality instead.

Having said all that, with Bluetooth and Sound Swap unavailable, I am not sure why the radio is not deactivated - perhaps because as it is getting charged via USB, there is no need to save the battery. So, I guess it is possible that we may disable Ace’s radio while connected to USB in the future. I will mark this thread as a feature request, and it will be seen by the relevant teams for consideration. Thanks for the feedback!

I hope this helps.

Incidentally, it is for moderators to decide when someone is off-topic - if you feel a post needs to be evaluated, please report it using the 3-dot menu to the side of the post. Please do not try to police threads yourself. Thanks.