Martin MFX130 SP Flexible Core Silk & Phosphor Acoustic Guitar Strings 11-47 Acoustic Bass 45-100 Preamp tube overdrive

Preamp tube overdrive

Full-bodied Hi Hat sound that is bolder for A Custom

2 Series™ is quite simply

The Multi-dimensional Morphing AiR sound source takes a different approach

Martin MFX130 SP Flexible Core Silk & Phosphor Acoustic Guitar Strings 11-47 Acoustic Bass 45-100 Preamp tube overdriveMartin SP Flexible Core strings marry our thinnest core wire to our standard tensions. These Silk & Phosphor acoustic guitar strings are made with bronzed steel core wire. Our SP Flexible Core strings feel soft to the touch, making them ideal for beginners. But don't be fooled by comfort! Just ask Tommy Emmanuel who performs with our SP Flexible Core strings night after night. With SP Flexible Core, you get total flexibility and total control. Gauge: