Used for about a week after purchase in October 2025, and offered for sale due to infrequent use. ・【Design Inspired by the Japanese Traditional Instrument "Koto"】These earphones are inspired by the Japanese traditional instrument "Koto," blending the tranquility of a Japanese-style room and the emotion played by the strings (ito) of the koto into a modern design. The 3D-printed resin housing features smooth curves, harmonizing traditional beauty with modern technology. The lightweight design, weighing only 6.5g per ear, ensures comfort even during extended use. ・【Hybrid Driver Configuration for Both Powerful and Delicate Sound】Equipped with two dynamic drivers (DD) and two balanced armature drivers (BA). The 10mm large DD reproduces deep, ultra-low frequencies, while the 8mm DD expresses the resonance of the mid-low range and the warmth of human voices. The BA units achieve transparent high frequencies, and vocals are also reproduced clearly. ・【Sound Tuning with the Realism of a Live Music Performance】Features a powerful bass emphasizing bass and kick drums, and mid-high frequencies that have both the tension and softness of koto strings. The tuning suppresses sibilance while bringing vocals to the forefront, conveying the energy of rock and hip-hop directly. ・【High-Quality Cable and Design Focused on Comfort】Employs DaVinci's "LEO CABLE," using 4-core high-purity single-crystal copper silver-plated wire to achieve clear sound quality with low noise. DUNU's unique "S&S eartips" combine adhesion and comfort, making them ideal for long listening sessions. ・【High Praise from Professionals and Music Enthusiasts】Co-developed with "Kajelog," one of Japan's largest audio YouTubers, and has garnered attention at domestic and international exhibitions (CANJAM, Akihabara event). The tuning is specialized for listeners who seek rhythm and impact, such as in rock and electronic music.