I measured the Rotel Michi S5 with my Audio Precision SYS2722 system,1 preconditioning the amplifier by operating it at1/8 the specified power into 8 ohms for 30 minutes. At the end of that time, the top panel’s temperature was 86°F/30°C, and that of the side panels next to the heatsinks 101.1°F/38.4°C. Though the rear-panel fans had turned on and were venting hot air, they were silent.
The Michi S5’s voltage
