Which external sound card.
Just got pioneer DDJ ergo running serato. What’s the best external sound card?
Te DDJ Ergo has a built in soundcard, connect it to your laptop via usb and to speakers via RCA and you’re good to go 
You can’t use external sound cards for Serato, other than their own SL boxes for timecode.
he might want the m-audio torq. 
seriously, serato box for serato and traktor box for traktor.
though there are other ai but no timecode.
otherwise, the ddj ergo has an ok sound card.
Thanks. That helps (as well as saves money).