After experimenting with ribbon materials available from all corners of the world, the design team landed on the 2.5 µm aluminum ribbon used in the RNR1, striking the perfect balance of flexibility and stiffness needed for this microphone's exceptional performance. The precision-machined and scalloped edges don't just look vibrant and dramatic, they have also been custom-designed to provide the ribbon with an acoustically ideal setting for the best possible frequency response. The matte black finish means the mic remains unobtrusive and doesn't draw any unnecessary attention to itself under harsh stage or studio lighting. The RNR1 includes a custom-designed and easy-to-use shock mount, which is essential in use to reduce the unwanted effects of vibration or knocks to the supporting microphone stand. Frequency range: 20 Hz - 25 kHz. Impedance: 200 Ohm. Weight: 860 g