Presonus HD9 Professional Monitoring Headphones Over-Ear Personal Monitor Closed Back (HD 9) Metronomes the NC-Q1 has microphones on

the NC-Q1 has microphones on both the inside and outside of the ear cup that accurately suppress a wide range of frequencies and auto-adjust according to the external sound environment

The PX-870’s innovative new Sound Projection system fills the room with rich

violinists

Dedicated amp-driven Studio Out for headphone distribution systems

Presonus HD9 Professional Monitoring Headphones Over-Ear Personal Monitor Closed Back (HD 9) Metronomes the NC-Q1 has microphones onPresonus HD9 Professional Monitoring Headphones Over Ear Personal Monitor Closed Back (HD 9) Nothing but clear, accurate sound. The HD9s closed back acoustic design provides superior listening isolation and reduces headphone bleed, so you hear nothing but musicand your housemates hear nothing at all. Peerless construction, surgical accuracy. The HD9's 45 mm dynamic, neodymium drivers and high power handling (900 mW per channel into 40 ohms) deliver