EJ39 is a medium gauge Phosphor Bronze set designed for acoustic 12-string guitars. D'Addario was the first to use Phosphor Bronze in acoustic guitar strings back in 1974. Today, Phosphor Bronze is played throughout the world and considered to be the standard in acoustic strings, thanks to its beautiful sonic balance and tonal warmth. Phosphor Bronze acoustic guitar strings are precision wound with phosphor bronze wrap wire over a high-carbon steel core, providing tonal versatility suitable for all acoustic styles and musical genres. This 12-52 Medium 12-string set provides heavier tension, resulting in a bolder, more resonant acoustic tone with higher resistance.

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String Tension Chart

Item #	Note	Diameter	Tension
PL012	E4	0.012 in	23.4 lbs
PL012	E4	0.012	23.4
PL016	B3	0.016	23.3
PL016	B3	0.016	23.3
PB025	G3	0.025	32.8
PL010	G4	0.010	22.9
PB032	D3	0.032	29.9
PL014	D4	0.014	25.2
PB042	A2	0.042	28.9
PL020	A3	0.020	28.9
PB052	E2	0.052	24.2
PB030	E3	0.030	33.6

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• D'Addario's most popular 12-string acoustic set with optimized gauges for balanced tone and comfortable playability
• Preferred for its warm, bright, and well balanced acoustic tone
• Environmentally friendly, corrosion resistant packaging for strings that are always fresh
• All D'Addario strings are designed, engineered, and manufactured in the USA