The bay brackets are high quality, too:
These are not the traditional tin things that are to be wrenched out, but rather thick plates fastened with screws. To remove a bracket or install a drive, you must take out the internal case for 3.5” drives. Our advice to you is to think over the configuration of hard and optical drives beforehand to avoid doing more work in the future. The good news is that, unlike with the Tenor, you don’t have to remove the front panel to put an optical drive in.
These are about all the external differences here. As for internal ones, the Bach and Mozart are both equipped with VFD displays and come with a remote control. As a result, there are more wires inside. First, it is an interface cable for the display and IR sensor. It uses one USB connector:
The cable is universal: you can plug it into any free USB port on the rear panel or you can use a mainboard’s header:
And here’s also a masterpiece of engineering thought, a super adapter of a unique design:
This monstrous thing is only meant to give you three wires to power up the display!
As you see, there’s nothing unusual here: one “ground”, one +5V and one +5V standby voltage to power the display when the system is shut down. So the question is why did they create such a huge adapter? There’s not so many space inside the system case and you wouldn’t want to clatter it with such a gift. You can correct the issue in about 10 minutes if you’ve got a soldering iron: the adapter is to be removed and the wires are to be put directly on a power supply cable. The result is some more free space inside the system case.