The phrase refers to a specific entry in the Life with a Slave visual novel series (known in Japanese as Dorei to no Seikatsu ), developed by the circle Playmeow .
People living with chronic "slave-like" schedules (long hours, no autonomy, high demands) report feeling hot even in air-conditioned rooms. They wake up drenched at 3 AM. They step outside in winter and feel nothing. This is not a thyroid problem; it is a dignity problem.
Understanding why your slave amplifier runs hot, distinguishing healthy warmth from dangerous overheating, and implementing proper thermal management will prolong the lifespan of your audio gear. Understanding the Master-Slave Audio Configuration