If an audio product were perfect, it would have no sound of its own. It would be invisible. It would have no “voice.”
In the real world, DACs, amplifiers, turntables, and especially the transducers—microphones, phono cartridges, and loudspeakers—all have character, all have a sonic signature.
If an overly optimistic designer believes their design and all the parts are perfect, and that there’s no need