My connect amp drops out the audio constantly. I have my connect amp running 2 klipschorn speakers. I’ve tried multiply  fixes which others have suggested, but nothing helps. One member has stated that Sonos is no longer supporting the older connect amps and it’s necessary to get a new connect amp. 

If you have an older Connect Amp you may find it work much better on S1 than S2, there is some good discussion of that and mitigations for the S2 issues.

If a new Amp is your only solution contact Sonos support and see if they can help you in getting one.

‘One member’ would be incorrect, Sonos still supports the CONNECT:AMP in addition to the Sonos Amp.