BACKGROUND In recent years, a high proportion of audio product (systems and devices) has been developed and produced with a focus on the hobbyist sector. This market is indeed larger in volume than the professional/industrial market and inherently price sensitive; therefore these products are often designed to a price point and manufactured accordingly. More often than not, these products are feature-rich (to attract instant and broad appeal), but performance poor. However they do find their way into the professional/industrial sector and on occasions can fulfil a need. Due to the disposable nature of this type of product the question of ongoing support is often a concern to the professional/industrial client. The Grover Notting Cross Reference Audio Monitor series has been developed for professional/industrial application. Their purpose is to replicate the typical sonic performance of domestic appliances such as television, radio, car radio and the various portable and stationary entertainment systems currently available. This product enables engineers and producers to cross reference their studio mix to the performance that would be experienced in a typical domestic environment, therefore providing the vital alternative listening source, or second opinion, an invaluable aid in the assessment and decision making process. These audio monitors will appeal to all those involved in music recording, mixing, mastering/editing, TV/film post production and broadcasting. They will also be used in recreational applications where space is a premium. In other words, anywhere that audio program is being produced.