[Hallicrafters] headphone advice

[Edward B Richards]

Hi all;

 Well, I finally finished my SX-42. The audio is terrific. However, my
headphones don't work on it. I can barely hear it  with full volume. I
see that the jack is wired to the plate circuit of the 6SL7 with a 220k
ohm load resistor, making it high impedance. My headphones are low
impedance. What do people use for headphones on the SX-42 ? Where can I
get some ? Thanks..

73, Ed Richards K6UUZ