Review on Raspberry Pi 4B & X400 V3.0 Metal Case with Power Switch, Heatsink, and DAC+AMP Expansion Board by Dana Mahendra

The case itself is of high quality and goes with everything. It's a really decent case, but it suffers from inferior accessories. The power button sometimes just blinks, causing the system to randomly reboot. Not a very good experience playing music or audio and suddenly it cuts out with a bang. The button is also useless, it doesn't turn off the Pi at all. This just turns off the power. So if you want to be on the safe side, you still need to log in and send a shutdown command before turning off the power. The cooler didn't include a fan, which is fine, and I didn't even use it. The heatsink itself cannot be installed on the Pi as the racks that come with it are too short to even reach the pins. The supplied radiator seals are unusable, they do not stick, they cannot be cut and fitted. I've just used other passive heatsinks that work better than this anyway and are easier to apply. I'm not sure if they've ever attempted to assemble or test these kits, but the components included make this a terrible purchase.