I have recently used two Spectron M III SE's (with V-Cap options on the main boards) in balanced mode to drive my MG 20Rs, which in this configuration, according to Spectron, is pushing greater that 2000 (some claim 3000)watts per side, with great results and no problems. It really wakes them up. They gain speed, dynamics, articlation and definitely a greater sense of ease with the greater power and current.