switching phono stage signal - need help

hi all - i have a bit of a setup question. right now i am plugging and unplugging the RCAs from my phono stage to switch between my amp and headphone amp, because each device only has one set of RCAs.

my setup:

EAR 834P phono stage - one in from turntable, one line-level out
Woo Audio WA6 headphone amp - one input only
Primaluna Prologue two - inputs only

any suggestions on how to better set up my system to go easily between headphone amp and integrated amp?