For sale are four panels of the most famous full range electrostatic loudspeakers in U.S. audio history! I have owned these panels for many years and enjoyed them. All four panels are in mint condition particularly considering their age. The 9's come complete with all original mounting hardware, stands and braces, ac power cords, owner's manuals, and advertizing literature, and even a schematic. Additionally, you will receive: two new sealed woofers; two new sealed tweeters; and new a cross-over. Each panel features a two-way system with one tweeter and ten bass panels. They are dipole radiators giving the effect of 28 square feet of radiation (14 front and rear per panel)! Frequency response is flat from 35 hz to 18,000 hz. The KLH 9 is one of the smoothest and most neutral speakers ever designed featuring an enormous sound stage, liquid effortless sound and uncanny bass definition. Most importantly, this is one of the most musical loudspeakers ever produced; they are thoroughly enagaing. Jazz and classical music are beautifully presented, although rock is certainly in their domain. Minimum power is 30 watts and tubes are preferred due to their ability to deliver high current and handle reactive loads with fluctuating impedance. Due to their large size local delivery is encouraged. Consider the price before buying anything twice or three times as expensive. Use the money saved on a better turntable or amp. These are classic!