When all else fails go to the manufacturer. Did a google search on "Musical Fidelity" and it was the first result.
Straight fromt he MF website:
"The X-CAN V3 has been designed so that it may be left
on ndefinitely, but please note that the mains adapter may become warm to the touch - this is normal.
Straight fromt he MF website:
"The X-CAN V3 has been designed so that it may be left
on ndefinitely, but please note that the mains adapter may become warm to the touch - this is normal.