In 2005, Bowers & Wilkins replaced its top-of-the-line N800 range with the new 800D range. The most publicised change was the introduction of diamond dome tweeters on some models 2005 also saw B&W receive the Queen's Award for Innovation for the tube-loaded drivers on the 800s. The EISA Award for European High End Audio Component of the Year is awarded to the 603. The PV1 receives the European Home Theatre Subwoofer of the year 2005–2006 award. The XT series introduced aluminium as a speaker cabinet material.