I refer to the used Audio System as my System, but many of the devices within the assembly are Bespoke, Unique and not in use by any other.
Then there are Devices that are used by others but in the guise that I own them with substantial design changes and modifications, these are Bespoke but used by a selection of owners having relied on the same service to attain the device.
My Audio System is not really my own, it is the Brainchild of other's.
I do own the credit for the bringing together the devices, the thought gone into how the system is propped up / supported, the thought gone into how the Space the End Sound is heard in, is formed to be a betterment for the sound produced, Source Material Recordings that are used to produce an End Sound, Cleanliness of a Source Material and the Critical Ancillaries used to interface with a Source Material.
Disciplines developed I am happy to be the adopter of the methodologies.