Have found over the years that the smaller the rack the better. Shorter wires can be used if located between speakers and less blocking of soundstage with a smaller/lower rack. In fact my current system consist of one component, a NAD M10 "streaming amplifier". Racks of themselves add nothing to the sound, but should be on soft footers if placed on soft (wooden) floors if a turntable is used. Used TimberNation.com for my current small rack, very well built and affordable. The rack is 4ft from front wall in dedicated room, making hookups easy.