When I bought my first pair of high end speakers after graduating college. Year 1991 at the Listening Room in Scarsdale, NY. I listened to four different speakers all under $1,000 I think at the time - Snell, Thiel, Mirage and Def Tech BP10. I remember the Def Techs cause i still have them in my basement storage room havent been used in a decade. I was blown away by that bipolar signature sound at the time and that's when Def Tech's tower speakers were higher quality.