With the Harman frequency response (FR) curve as its tuning target, whether in terms of parameter performance or sound perception, KZ Castor outperforms most flagship products from other brands.

In the past two years, many audiophiles have pursued a higher degree of adherence to the Harman FR curve. Many brands have used the Harman curve as a reference to launch their flagship products. Due to the challenging nature of acoustic tuning in achieving the Harman curve, many brands only fine-tune their flagship products to a relatively high degree of adherence. On the other hand, some lower-priced products, constrained by technology and cost, do not follow the Harman curve style in their tuning.

KZ Castor breaks through traditional acoustic tuning methods by adopting a dual-dynamic driver acoustic design. This approach has resulted in the perfect Harman curve that outperforms flagship products from other brands.

KZ Castor features a unique design with two stacked dynamic drivers. One 10mm driver is dedicated to producing frequencies around 20-200Hz for bass output, while the other 8mm driver handles mid and high frequencies. Through precise electronic crossover technology, these two drivers work synergistically without interference between their frequencies. This enables KZ Castor to deliver powerful and energetic bass as well as stunning mid and high frequencies.