Cambridge Audio’s London-based engineering team designed the Azur 551R according to their usual high-end standards. This receiver boasts seven discrete amplifiers, powered by a low-flux toroidal transformer. This combination provides steady power throughout the fluctuating demands of the music itself, and delivers sound via separate amplifiers for every channel. These are isolated from the processing and input stages to minimize interference and ensure performance without compromise. The rock-solid, low-vibration chassis contains Cambridge’s clever X-tract™ cooling systems to minimize distortion and loss of efficiency caused by overheating. A perfectly balanced combination of natural convection and forced cooling draws away heat virtually silently.