There may be several reasons why a good adapter is more expensive than a headphone cable:
1. Material and manufacturing process: A good adapter usually uses higher quality materials and sophisticated manufacturing processes to ensure the stability of signal transmission and improvement of audio quality. These high-quality materials and workmanship cost more, thus causing the price to rise.
2. Technology and design: Some high-quality adapters use patented technology and complex designs to achieve better audio transmission, noise reduction, or other enhanced features. The development and implementation of these technologies and designs will also increase product prices accordingly.
3. Brand and market positioning: Adapters produced by some well-known brands or professional audio equipment manufacturers are often more expensive. These brands have a good reputation and high recognition in the market, and their products are often considered to be high-quality and reliable options, so the prices are relatively high.
Not all high-priced adapters can provide a high-quality audio experience. Before purchasing, it is recommended to check the product's performance parameters, user reviews and professional reviews to ensure that the adapter you purchase meets your needs and provides high-quality audio performance.