Looking at a pair of heresy hbr with only one tag left on one of the speakers. The serial number is 98u301. Would these be from 1980 if S is 1978? I currently own a pair of Klipsch KG1.2 bookshelf speakers that I love. Would this be a major upgrade?
I am pretty happy with the bookshelf speakers running off of an old v-fet Sony amp and same vintage turntable.
Martin