I have four systems in play at the moment. My "vintage" system consists of a pair of large Advent speakers, Scott 299 integrated amplifier (tube) Scott 350B Tuner (tube) and a Thorens TD 125 MKII turntable with a Soundsmith cartridge. My other systems are all upscale, high end contemporary components with impeccable reputations. What do I listen to the most? The Advents! They are neutral, detailed and very responsive. Great bass and wonderful imaging. I'm on the verge of adding a second pair and stacking them as reported by the Absolute Sound in 1973. Can anyone who has done that give me advice on wiring them?