Most Mark of the Unicorn Products use an internal switchable power supply which accept a standard power cable. However some older units did have wall wart power supplies which are not as simple to replace. Here is a list in case yours succumbs to entropy:


Midi Timepiece (original):
9 Volt
500 mA
Positive Tip.

Pocket Express:
9 Volt
300 mA
Positive Tip

Midi Mixer 7s:
18 Volt
500 mA
Positive Tip.