Ed Kojima focused on what he called “musical heart Instruments” as the goal of his audio equipment business, which he founded in 2007. After years of working in the audio video industry as a developing engineer and products planner, Mr. Kojima was not satisfied with today's audio equipments. His biggest concern was that many audio equipments lacked “musicality,” a term he coined to describe their inadequacy at reproducing the vitality and excitement of the concert experience. Located in Corona, California, Mr. Kojima introduced musical heart instruments as the product goal of his new business, and followed up with its first product: the Evidence Speaker. The Evidence Speaker physically placed the audience in the center of the sound so that the experience exceeded the physical elements generated by the concert itself.  This product was launched in early 2008 and became available in the US and Japanese markets during that year.

Mr. Kojima, and his philosophy of musical heart instruments, continues to pursue his primary goal.  The method he has selected is to recreate the totality of sound by developing as perfect a physical and audio experience as possible. Currently, the enjoyment of musical reproduction is not the same as the enjoyment of real music.  Mr. Kojima’s goal, however, in sound generating technology is to take his audience directly into the center sound itself so that the complete sensation of music transports his listeners into a realm of their own.  Musical heart instruments has come as close as possible to this goal. These personal features of the musical experience reflect why Mr. Kojima chose to name his philosophy "musical heart instruments.”  At the same time, “musical heart Instruments” became the brand name for his audio equipments.

The process that Mr. Kojima selected to achieve his goals comprised three principles: pursuing musicality with original and unique concepts, pursuing a speaker design that is both chic and compact, and pursuing a product that is both affordable and long lasting.  His original and unique concept takes old principles of sound reproduction and converts them into an integrated speaker; this system unites sound rather than divides it into its three basic element: base, med-range, and high frequency.  Mr. Kojima’s speaker designs reflect an aesthetic sense that places the technology in a cabinet that augments the audio experience with attractive furniture that is both stylish and unobtrusive.  Mr. Kojima wants to make his product available to as many people as possible so that they can enjoy musical heart instruments for a lifetime; therefore, each one of his speakers must be as inexpensive as possible.  Finally, Mr. Kojima hopes that a customer who selects a speaker does so for the depth of the music it reproduces and the technical qualities of its sound.  Mr. Kojima therefore says music is a unity of sounds and not a series of wavelengths.