D'Addario EJ37 Phosphor Bronze Acoustic 12-Strings - Medium Top Heavy Bottom Brand_ AXL they use the highest quality

they use the highest quality solder connections

Maple "Pie" resonator with tortoise bindings

Helicore H310 violin strings are crafted with a multi-stranded steel core

The highly sensitive piezo transducer senses vibrations directly from the instrument for fast and accurate tuning response

D'Addario EJ37 Phosphor Bronze Acoustic 12-Strings - Medium Top Heavy Bottom Brand_ AXL they use the highest qualityD'AddarioEJ37 12 String Phosphor Bronze Acoustic Guitar Strings Medium Top Heavy Bottom Phosphor Bronze acoustic guitar strings are acclaimed worldwide for their great, long lasting tone. Phosphor Bronze was introduced to guitar string making by D'Addario in 1974 and has become synonymous with warm acoustic tone. Gauge: 12 12 16 16 25 10 32 15 42 22 54 30