Apple GarageBand Latency, Would Amp Solve?

It’s your choice. The ONE SL’s are not automatically configured as surrounds.

Sorry, I’m not being clear. What I’m saying is that in the Room with the Sonos Amp, S2 only gives me the option of adding the One SL pair as “surrounds”, this after I’ve taken them out of their previous room. One other variable: I had to “hide” the the separate One SLs “from the app” by signing into my Account (in case this is relevant).

There is no choice being presented.

Seems like eliminating the One SL pair and the Sonos Amp from my system and “adding a product” might be the way to go. I’ll have to Google how to delete products from my system.

Thanks, @buzz 

Don’t Factory Reset any SONOS units without further consult.

Go to Settings —> System —> [ROOM name] and remove the ONE SL’s from the surround Room. Now you will have the AMP and ONE SL’s as three separate Rooms. Next, Bond the two ONE SL’s together as a stereo pair. This will leave you with an AMP Room (with or without a SUB) and a ONE SL Room. If you want to play the same source in both Rooms, use the Group feature.

Ah, I see. The key is not sticking them all in the same Sonos room and using the group feature. Forgive my density in not getting this @buzz. I’ve been stuck in the “Room” form factor, as I’ve never used the Group feature.

Understood on not resetting!

@buzz -works like a charm for all my use case applications (GarageBand and all computer output, and Roon Labs output to multiple Roon zones/endpoints.)! Really appreciate your patience in explaining this repeatedly to me Buzz!

What I love about the Group feature, is I can add the Sonos “Amp” room (I have only the Amp in that Sonos room), when I need it, otherwise the One SL pair and sub-mini are their own room (Desk), trueplayed, L/R balanceable and available for streaming from that room solely.

Hey, @buzz - perhaps a stretch here, but do you have any idea how to get my Mac to recognize the Sonos Amp as an audio output via the HDMI connection between the two? The Mac HDMI port is not ARC or eARC; is that the problem?

Mac Sound preference do recognize my two monitors as HDMI outputs (they are being connected to the Mac with HDMI (Monitor) to USB C (Mac) and both monitors show up as an HDMI sound outputs as result. I guess the Mac thinks the monitors have speakers, which they do not.  Also, there are regular, thought very quick and hardly noticeable, audio gaps via RCA. I was hoping HDMI might solve these.

Does this question make sense as asked?

 Also, there are regular, thought very quick and hardly noticeable, audio gaps via RCA.

Increasing the delay ms in S2 from 75 to 150ms via RCA has gotten rid of the “glitches”.

Only HDMI-ARC and HDMI-eARC are supported. This is not an oversight, this is how the standards work. Audio travels differently over HDMI. There are end runs on this, but they require a “box”. If your Mac provides an optical output, there is an inexpensive SONOS dongle that can connect AMP.

Wiring more of your devices to the network will improve data flow. The network is struggling with something, that’s why you need the 150ms.

I figured I needed ARC or eARC (audio return channel) in the Mac’s port as you had referred to it what way in one of your first responses here.

Interesting, however, that the monitors are recognized as HDMI sound sources and the Sonos Amp is not, and doesn’t show up when connected via HDMI, similar to the Monitors: I wonder why that is?

The monitors are HDMI “sinks”. ARC is not an HDMI sink. One reason is that ARC does not support video.

I’m not following your last, but accept that I cannot output sound to the Sonos Amp, via HDMI. : )

Thanks, @buzz