The Thunder Reds sets: a unique look and a strong, consistent sound. Until now, it was necessary to increase a string's gauge to reach lower frequencies. But increasing the string's diameter also increases internal dampening. That makes the string less bright, less responsive and more muffled: the thicker the string, the duller the sound.\n\nAquila's revolutionary new approach, never introduced before, changes the specific weight of the material, increasing it progressively to leave the gauge unchanged.