Koss PortaPro is really a classic product. It has been popular for more than 20 years. Is it not enough to prove its classic level? The main reason is that the bass is powerful enough. Although the boom is not powerful enough, it is still powerful, and is more suitable for rock music and other music. The metal head beam is used to ensure firmness. Although the appearance is quite special, it is still very comfortable to wear.
The historical low price of Koss PortaPro is US $24.99, which is about 150 yuan. The purchase price is 250 yuan, and the purchase price on Taobao is about 700+.
