Atec Valencia 846A has a 16 ohm version. The humble Duke also did not mention his Audio Kinesis speakers. Audio Note make a High Efficiency version of the AN-E, designated HE. However, I believe it's 98DB, but not 16 Ohm. I think the AN-E HE's are actually an 8 ohm load. Well, I guess the Audio Notes wouldn't necessarily be full range.