The D'Addario XTC45FF is the extended-life version of the Pro-Arté Carbon set. It pairs D'Addario's carbon (fluorocarbon) trebles with Dynacore basses that carry the XT corrosion-resistance treatment on every wound string. The treatment is thin enough that the basses keep the tone and feel of an uncoated string, but they hold their brightness far longer than standard silver-plated basses.
Carbon trebles are denser than nylon, so they are thinner at the same pitch, with a quick, focused attack, strong projection, and very accurate intonation. Dynacore basses are wound on a multifilament stranded core for a flexible feel and a bold, full low end. Normal tension is the balanced choice for most guitars; note that carbon trebles feel a little firmer under the fingers than nylon, particularly the first string.
Made in the USA at D'Addario's New York facility. For the same set without the XT treatment, see the EJ45FF; for more volume and a firmer feel, see the XTC46FF hard tension.
String |
Note |
Diameter (in.) |
Tension (lbs.) |
Material |
1st |
E |
0.0240 |
21.3 |
carbon |
2nd |
B |
0.0272 |
15.3 |
carbon |
3rd |
G |
0.0331 |
14.3 |
carbon |
4th |
D |
0.028 |
13.6 |
XT silverplated Dynacore |
5th |
A |
0.035 |
14.7 |
XT silverplated Dynacore |
6th |
E |
0.044 |
15.3 |
XT silverplated Dynacore |
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