Load impedance: Greater or = to 1000 Ohms. Equivalent Noise level: Less than 18dB A (IEC581-5). Max. Input SPL: 126dB(THD=1.0% at 1kHZ). Electrical current: Greater than 4.8Ma. Microphone body net weight:320 Grams (0.7 Pounds). Microphone Max.diameter 44mm (1.73" inches). Microphone Length 217mm (8.54" inches). Microphone material: steel grille Alluminum (handheld part). PCB Layout: Surface mount. Features: Rockville DMS40 40" Studio Desk Clamp Microphone Stand w/Boom Arm. Articulating microphone boom arm. Suitable for studios, broadcasting, podcasting, and more. Arms: 20" 20" arm length for adjustment. C-shape desk clamp is made of aluminum alloy. Fits any desk less than 2 inch thick. ABS plastic mic clip. You can set the base of the stand on the desk firmly and adjust to your favorite position. High quality steel frame is sturdy and durable. Internal springs for silent and effortless positioning Rockville brings you studio quality headphones and at an incredible price with its new PRO-M50 headphones. These are professional grade headphones that are guaranteed to ourperform headphones that cost triple the price! These feature ergonomically designed swiveling cups with interchangeable soft suede or leather finish cushions (included). The ear cups seal tight for excellent sound isolation and minimal bleed. Inside these cups you'll find 40mm Neodymium drivers delivering accurate audio with an extended frequency range for clear and rich bass, and a full frequency range of mids and highs. These are closed back style headphones specifically designed for studio monitoring. These play back the sound with a flat frequency curve so you can hear your music exactly how it was recorded. With the PRO-M50 you can expect to hear every detail of every song with extreme accuracy. These headphones cover full frequency ranges; even extending a bit past the frequencies that the human ear can hear.