The following speaker models are designed for North American Voltage between 110V ~ 127V:
AR302-BK
AR306-BK
AR504LR-BK
AR506-BK
AR508LR-BK
AR604H-BR
The following speaker models are designed for Universal Voltage between 110V ~ 240V:
ARDS350-BK
ARDS550-BK
ARDS750-BK