I have had two Vault - the Vault 1 failed to a known problem and was replaced by a Vault 2. The Vault 2 failed last month during update of software. BlueSound says it is out of warranty, offered a reconditioned unit at reduced price.
Why would I try a Vault a third time? I found BlueSound to be unhelpful and absolutely think they should stand behind their products.
So over to the Mini I go.
Andy
PS - if anyone knows how to get to customer complaints at BlueSound or NAD would appreciate your communicating that - they must have a dispute resolution service but it is certainly well hidden and they help desk does not respond to my request for the connection.