The PB23 is for powering phantom powered microphones with 48VDC. Since the unit uses a 100KHz switching power supply there is no audio noise generated. It has an output pull down resistors so it will work with any mixer.
• Powers a single microphone
• Utilizes a switching regulator for stable voltage performance
Phantom voltage: 48V
Connectors: 1: Male XLR, 1: Female XLR, 1: 5mm DC input jack
Power Input 12 - 18 VCD (Rolls PS27)
Size: 3" x 2.5" x 1.25"
Weight: 1lb (.68 Kg)
Current drain 40ma nominal one mic 15vdc
Rolls PB23 Phantom Power Adapter Reviews