Rolls PB Dual Phantom Power Supply. The PB223 provides phantom power at 12 and 48VDC for condenser microphones. The PB223 has two microphone ins/outs and also offers a convenient power loop-thru for using other 12VDC. Original power supply included. Dimensions: 1-1/2" H x 5" W x 2-3/4" D. Excellent condition. $25 shipped and Paypal'd CONUS only. No trades.