I probably spent much of my time at AXPONA with a severe case of resting bitch face, as I'm usually concentrating hard. There's a lot to cover, and a thousand facts to get straight. But during system auditions, I occasionally smiled too, sometimes unintentionally making eye contact with exhibitors who were excited to see that I was excited. That's what happened in the Linkwitz room, where CEO Frank Brenner and noted Linkwitz evangelist Charles Port were demoing the company's LX521.4 open-baffle speakers.