Normally the PJP-25UR and PJP-25URS runs only on USB bus power, but with the PS-AC1 dedicated adapter, you can power the PJP even in cases such as the following where USB power is unavailable.

* When no USB port is available, and connection is made via the AUDIO I/O port

* When USB bus power alone is insufficient (such as when playing back music at high volume)

Specifications