Hello David..Welcome to the forum. Now you see why i i was looking for a second pair of Quartets!.Money well spent for the crites. Keep in mind there is a "aprox 20 hour".. burn in time for the sonicaps so you should expect even more for your effort. I plan to do my kg5.5s next then eventually the chorus,s..By the way ,what do you plan to hook the pioneer receiver to? also ,how bout some pics of your mcintosh gear!