LONDON--(BUSINESS WIRE)--Marshall, makers of the world’s leading amplifiers and headphones proudly presents the first smartphone that puts music on the main stage – the Marshall London. For over half a century Marshall has focused heavily on the sound of its products, and the London is no exception. It might just be the loudest phone on Earth. The London is set to be available in 8 countries worldwide. Pre ordering available from July 16th for delivery in late August, middle of September depend