All the above responses are good. First, figure out what you ultimately want from these speakers and proceed carefully. I purchased my first pair in the early '80's just after entering college, and at the time, I was using my Harmon-Kardon receiver. It made sound, but not music! No texture, no separation of instruments, no depth and no imaging. By the end of college I had installed the upgraded capacitor and mirror-imaging kit and was running Threshold 400A and Audio Research SP-8. In the right room setup, these speakers will throw images 5 feet beyond the outside edges of each speaker, and the depth will astound you. But you must pony-up for the electronics and front end. You can find a used Threshold 400A (an ideal amp for these speakers) and the preamp of your choice for reasonable costs. Sometimes I wonder why I sold them.
Good Luck
Good Luck