AKG K142HD was launched in 2008, and it has been some years since then. It is positioned as a medium and high-end monitoring headset, which uses 40mm large units, velvet earmuffs, and original Austrian manufacturers. The parameters are 55 ohm impedance and 101 dB sensitivity respectively. AKG K142HD's historical low price is 64.95 dollars, about 400 yuan, and the domestic public price is 599