Randall 4 Button Universal Midi Footswitch

4 button universal midi controller ‰ۡó»?å¢ÌÎ_ÌÎ_í?ÌÎ_̴å¢?ÌÎ__ÌÎ_? can be powered via 7 pins cable by amps that provide MIDI power ‰ۡó»?å¢ÌÎ_ÌÎ_í?ÌÎ_̴å¢?ÌÎ__ÌÎ_?or- 9VAC inlet provided (PSU not included)