Hey guys. Just joined and just purchased aforementioned PL30s as per this forum! They're in the mail. I don't have access to fancy source devices, just my laptop with a meh to decent on board soundcard. What kinda music and for how long should I drive these bad boys to break em in? I'll most likely plug em in, put em in the case and just let em rip for how as long as its needed, going about my day otherwise.