Martin Phosphor Bronze Strings are excellent for daily use, and always handy to have a spare set. Deep, rich bass tones and crisp, ringing trebles, the Martin M530 set provide wonderful tones, and could even improve your existing guitar tone. Phosphor Bronze has a slightly warmer sound than bronze. Martin 92/8 Phosphor Bronze is an alloy comprised of 92% copper and 8% tin with traces of lead, iron, zinc and phosphor. These strings produce a bright but slightly warmer sound than the 80/20 bronze. The phosphor in the alloy helps them retain their new sound for greater consistency.
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