Rolls Headphone Tap PM52
The Rolls PM52 is for connecting headphones to a speaker line. The 1/4" Mono/stereo loop jacks are for connecting many boxes in series. There are 2 headphone jacks and volume control. The PM52 uses the speaker line signal for power, and uses no batteries.
SPECS:Input Impedance: 150 Ohms. Size: 2.25" x 2.5" x 1.25". Weight: 1lb (.45 Kg).