ART ProMIX Three Channel Portable Battery Powered Microphone Mixer w/
Mackie M48, 48 Volt Battery Powered Phantom Power Supply, only used once | eBay
Original Alctron PS200 48V Phantom Power Supply for condenser microphone both by 9V battery and 9V
Amazon.com: Xvive P1 Phantom Power Supply 48V/12V Switch,Up to 40 Hours of Use,Rechargeable Portable Phantom Power for Condenser/Shotgun Microphones, Mic Preamp, Recording Studios : Musical Instruments