The UDAC has the on/off switch on the front, The BUDA has it on the back (upper right corner) but it is still relatively easy to reach, but the DPS is hidden in the bottom and next to the power input cables. Frequently I have to get up and reach into the back to turn it on and off and since I use an upgrade power cord that has a large connector, the on off switch is half covered. And many times the switch get stuck in the middle position, ie not on or off which casue some concern if I will accidentally short circuit the DPS.
It will be nice if the on/off switches of all three components are located in the front for easy operation. Just some feedback from a fan of headroom.