Not only that, as I have been mentioning previously. The
M8 is the First player to have implemented a “
proper cooling techniques“. It
has 3 main chips sitting directly on the chassis with Graphene cooling thermal paste. The aK4499EQ is a Desktop IC chip. It consumes a lot of power in both forms Currents and voltages swing depends on task, and so it “heats up” very quickly. It was meant to be in a “proper cooling design”. It should have Coolant fins, or sitting directly on top of Metal surfaces that can help it dissipate the heats during operations.
I have yet to see any Portable Player to have incorporate such design on the chassis like the M8. All I have seen is that a “thermal Stripes” were inserted and route toward the chassis to help it cool down (Cayin N8). Or just leave it alone with a lot of Ground plane to cool itself (Sony DMP-Z1), or just leave it as is, and possibly “throttle down” (the SP2K or possibly FiiO M15).
So, The M8 being heated up, it is just an indications that the chassis are conducting the generated heats efficiently and away from both AK4499EQ and the SnapDragon 440 main chips.
Take it this way, if you are cooling down something by the chassis, but your chassis is not heated up enough, then you have failed at doing it.
One example of Desktop Class IC being cooled down within a Desktop DAC, the picture is showing the coolant fins sitting atop of ES9038Pros
So, do not worry about the M8 being warmed up. It is warmed up just because the AK4499EQ are running as it should. The more heat generated is the harder the ak4499eq are at work, and the better the chassis as a whole are dissipating the heats
This picture shows the Red circle that has 2X AK4499EQ sitting on top with thermal paste and the Blue large circle is for cooling 440 CPU. They also act as direct shielding as well, and away from the LCD display on top
To better dissipate the heats, you could also use it without the Leather case to expose as much Chassis surface as possible. Even thought the case is well designed and has as much exposure as possible, the 4 corners are still retaining and trapping it back. It should be best to use M8 as is with just a screen or glass protections