Aquila 91U THUNDER REDS, BASS Ukulele/Ashbory Set 4-string, GDAE Tuning he string, the duller the sound. Aquila's revolutionary new approach - never introduced before us - changes the specific weight of the material, increasing it progressively to leave the gauge unchanged. Set / Bass Ukulele (Bassuke) 4-string G D A E All 4 strings made of THUNDER REDS Colour: red brown Designed for Kala U-Bass and Ashbory Bass only (of 18"-21" scale/ 457-533 mm). The Thunder Reds strings feature 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 t