@CiaraNi It's very much the same with audio files. I have a 40 yr old system which produces fully satisfactory results, and my response to family members who tell me I 'need' a newer system to get best results, I tell them I have no intention of spending large sums to get results that only my dog can hear.

@jtonline I think a more apt one is the one we use for Crows, ie a Murder, which I find very sad as Crows are very intelligent and capable birds, unlike tech billionaires.