Typically, there is concern about transformers causing internal vibration that affects other components in a solid state design. One reason we see an increasing number of high end solid state components going to external power supplies. In cases where the transformer is contained in the same case with more sensitive circuits, like in a powerful integrated amplifier, coupling devices that drain away vibration may be more appropriate than devices that isolate the device from external vibration sources.
“Some damaging vibrations are created inside your stereo components. Obvious contributors would be CD drives, trays, and actuators whose mechanical movement creates vibrations that can travel through the structure, potentially affecting sensitive board-level circuit components. Less obvious, but in some ways more problematic, are transformers. All transformers vibrate and, just as with mechanical sources, the vibrations they create can influence sensitive circuitry.”
https://www.gcaudio.com/tips-tricks/vibration-origins-effects-solutions/