Yes, according to the person in charge of their company, HOLA is 3D printed, GATE is a molded part, and the remaining cost is mainly used for upgrading the driver units and ear tips.
Yes, Gate has excellent vocal depth and soundstage framework. With just a cable upgrade to enhance information retrieval, the listening experience becomes exceptional.
The sound of the Chu 2 leans towards a more V-shaped signature, with stronger energy and dynamics, but the soundstage can feel crowded and intimate. In contrast, the GATE leans towards the upper midrange, offering a more expansive soundstage and a relaxed, natural sound.
Sorry, I've only listened to the 7HZ ZERO at an exhibition. GATE has a natural soundstage. While the imaging is somewhat diffuse, it doesn't hollow. Based on my impression, the ZERO is a bit hollow and rough.
