1, Custom order RCA input:
     Cost USD30 and  3 workdays delay .  There are 4 pcs RCA socket install connect the hot and cold pins of the XLR , if want to connect RCA input ,usually connect to hot  RCA input, and push into the RCA shorters on the cold RCA inputs . While connect the XLR input, pull off the RCA shorters .

2, Custom order two pair speakers output ports:
     Cost USD50 and  3 workdays delay . Applied CMC output ports