Okay, so this is the thread for OVC - Vacuum Tube Headphones! They are actually real!! Let's talk about them! Site: https://headphone.ovcaudio.com/ Price: 300 USD Specification • Frequency response :10 Hz -45 kHz • Headphone driver impedance ： 300Ω • S/N >90 dB • THD < 1% • One push...