- AED 31.50GHS Coated Guitar Boomers are manufactured from the purest materials, free of environment damaging chemical processes. We begin with the finest nickel plated steel wire and coat it using a finely regulated process. This unique technology coats the outer wires which are then wrapped around a high quality core wire producing a string that has outstanding extended performance life with powerful tone. The plain steel strings are also coated to give a well balanced feel. Located in the heart of America, the GHS manufacturing facility is 100% humidity controlled to ensure factory freshness in every air-tight Fresh Pack TM that we produce. That’s why players worldwide trust GHS for pure string quality with a sound and strength that can endure the toughest gigs and the longest hours.