The KE4 starts fresh from the ground up, featuring a 2 Dynamic Driver (2DD) isobaric sub-woofer system, combined with 2 Balanced Armature (2BA) full-range and tweeter speakers. The KE4 delivers unmatched sound output with a high precision, rich tonality, and a excellent high frequency extension.Tangzu always brings products with fashionable and classical beauty. This time their new product, Tang Sancai, is also a product with character.