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Can I add the sub mini to my existing system for extra bass? I have an Arc Ultra, Sub 4, two Era 300’s. Thanks

Can I add the sub mini to my existing system for extra bass? I have an Arc Ultra, Sub 4, two Era 300’s. Thanks

Not if they’re configured as a home theatre system. 
Yes if the Eras are individual or a stereo pair. 


Thank you for the information! That is what I needed to know. Bummer that is not an option. 


Thank you for the information! That is what I needed to know. Bummer that is not an option. 

You can add another Sub though. 


The Arc Ultra already has more base than the Arc. Sonos probably thinks a Sub mini does not ad much extra.