Martin SP MSP4200 Phosphor Bronze 13-56

Martin SP MSP4200 Phosphor Bronze 13-56 MEDIUM

Martin SP Phosphor Bronze acoustic guitar strings have a bronze flashing that provides greater durability without sacrificing tone or playability so you can stay in tune and play longer. 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. 

	The huge range of gauges and types of strings can be daunting. If you have any doubts or wish to learn more about strings, have a look at this document.