Functionality confirmed before listing. While there is a sense of use, it is a relatively clean product. The dedicated cable is sold separately and costs around 10,000 yen, but I will include it as an accessory. The cable shows signs of deterioration, but it worked without any problems. Please consider it as a bonus. The condenser microphone and headphones also offer high-quality sound unique to AKG, perfect for professional use such as live streaming and singing performances. The AKG HSC271 is a high-end professional headset microphone equipped with a condenser microphone. It is the ideal headset for broadcasters, such as for TV program recordings. ------------------------------------------------ ＜Features＞ ■ Equipped with a mute switch function that automatically mutes the headphone output when the headphones are removed from the head. ■ The microphone is equipped with a shock mount to reduce mechanical noise. ■ The mute function is activated automatically when the boom arm is raised. This cuts out unwanted sound collection. ■ By rotating the boom to the opposite side, the microphone can be positioned on either the left or right side. ------------------------------------------------ ＜Specifications＞ ◇ Microphone Section ■ Type: Condenser ■ Polar Pattern: Cardioid ■ Frequency Response: 20Hz～20kHz ■ Open Circuit Sensitivity: -32dB re 1V/Pa ■ Maximum Sound Pressure Level: 126dB SPL (THD 1%) ■ Equivalent Noise Level: 22dB SPL (A-weighted) ■ Impedance: Less than 200Ω ■ Power Phantom: DC9～52V/2mA or less ------------------------------------------------ ◇ Headphone Section ■ Type: Closed-back dynamic ■ Sensitivity (1kHz): 94dB SPL/mW ■ Frequency Response: 16Hz～28kHz ■ Maximum Input Power: 200mW ■ Impedance: 55Ω ■ Ear Pads: Around-ear type, synthetic leather ◇ Other Accessories: Ear pads (velour), windscreen (W44) ------------------------------------------------