Sculpted from ash hardwood, the chinon ‘legato CH-PS840′ iPhone speaker dock increases volume by up to six decibels. the refined resonance chamber channels sound waves through the horn and is designed to create a background ambiance or a relaxed listening atmosphere. the device is passive – so does not use electricity – what this does is generate a stable and sonic performance that improves low and mid-high regions.
http://www.designboom.com/technology/chinon-iphone-speaker-08-21-2014/
