If your switching speakers every 6 months your either very wealthy which is cool, Maybe something is wrong with your equipment that your not aware of yet. There maybe something wrong with your acoustics. After you see past the illusions that go along with installing new speakers, the "honeymoon phase" I call it, you see the flaws that where glossed over. But then ask yourself are you listening to music or just to the equipment? Maybe the problem is elsewhere.
But to answer your question, I have owned KLH Model-Nines for 42 yrs.
But to answer your question, I have owned KLH Model-Nines for 42 yrs.