Gorgeous pair of Quicksilver Silver Mono 90s. These are driving a pair of Quad ESL-63s in my house currently, and produce a gorgeous sonic landscape with a ravishing midrange. Both amplifiers have just been retubed (paperwork available to confirm tube replacement), and the tubes should last for several thousand hours of bliss free listening.
: “The Silver Monos (90 watts) were designed in 1991 in response to customers wanting more power. Giving 90 watts out of two KT88 output tubes, they were amazingly affordable and, with their low output impedance, were quite adept at driving the more difficult loads that the many electrostatic speakers on the market presented. These were a best seller for four years and are still popular on the used market.”
The Silver 90s weigh 36.6 pounds each. They are 15.5 inches by 10 inches wide by 6 inches high. I don't have the original boxes, but will ship safely with lots of padding.