The U851R boundary mic offers transparent sound for surface-mount applications.Featuring breakthrough audio and mechanical design innovations, the phantom-powered U851R offers outstanding speech intelligibility and transparent sound quality for surface-mount applications. The microphone is equipped with a Pivot Point rotating output connector, UniSteep filter and UniGuard RFI-shielding technology. It accepts interchangeable condenser elementsavailable for boundary microphones in cardioid, hypercardioid and omnidirectional polar patterns. With a heavy die-cast case and silicon foam bottom pads to minimize coupling of surface vibration to the microphone, the U851R is equipped with self-contained electronics, eliminating the need for an external power module. ELEMENT Fixed-charge back plate, permanently polarized condenser.SPECIFICATIONSPolar Pattern: Half-cardioid, (cardioid in hemisphere above mounting surface)Frequency Response: 30-20,000 HzLow Frequency Roll-off: 80 Hz, 18 dB/octaveOpen Circuit Sensitivity: 34 dB (19.9 mV) re 1V at 1 PaImpedance: 200 ohmsMaximum Input Sound Level: 134 dB SPL, 1 kHz at 1% T.H.D.Dynamic Range: (typical) 108 dB, 1 kHz at Max SPLSignal-Noise Ratio 68 dB, 1 kHz at 1 PaPhantom Power Requirements: 11-52V DC, 4 mA typicalSwitch: Flat, roll-offWeight: 9.2 oz (262 g)Dimensions: 4.25 inch (108.0 mm) long, 3.31 inch (84.0 mm) maximum width, 0.91 inch (23.0 mm) heightOutput Connector: TB3M-typeCable: 25.0 foot (7.6 m) long, 0.13 inch (3.2 mm) diameter, 2-conductor, shielded cable with TA3F and XLRM-type connectorsOptional Interchangeable Elements: UE-H hypercardioid (100 degree);UE-O: omnidirectional (360 degree)Accessories Furnished: Soft protective pouchManufacturer:Audio-TechnicaModel:U851RWSKU:I327477-N-1-WHXAUPC: 042005139156We are Chuck Levin’s Washington Music CenterSince 1958, Chuck Levins Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Musicfrom instruments and recording gear to pro audio, rentals, and repair services.Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE lineexclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.Chuck Levins isnt just a storeits a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.