I'll have to check it out. Thanks for the speedy reply! In theory, if you have a problem centered on 60hz room treatments and seating position is the only cure. This device has me curious what tricks they employ to acheive near flat response without losing too much sub headroom. They gotta be masking the fundamental standing frequency somehow. How they replace it has me baffled. The device does apparently introduce sub audio lag. Have you noticed this?