I used a set of "Tweakers" for speaker output on the KX1. Self powered from an internal battery that recharges usinf a "D" cable to any USB port. Don't know if they are still available... :\ -- Dave G KK7SS DN06ig Richland, WA '59 Morris Minor 1000 '65 Sprite - in process '76 Midget - shared with my #4 son. '06 Honda Civic Hybrid