Ideal for acoustic guitar, overheads, piano and group vocals. Condenser design for studio-quality vocal and instrument applications. Excels in high-SPL applications. Extended response for smooth, natural sonic characteristics. Low-mass element for superb transient response. Corrosion-resistant contacts from gold-plated XLRM-type connector. Rugged design and construction for reliable performance. Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source. AT2020 Side-address cardioid condenser microphone. The price/performance standard in side-address studio condenser microphone technology. Ideal for project/home-studio applications. High SPL handling and wide dynamic range provide unmatched versatility. Custom-engineered low-mass diaphragm provides extended frequency response and superior transient response. Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source. Pivoting, threaded stand mount attaches securely for easy and precise placement of the microphone. AT2021 Small-diaphragm cardioid condenser microphone. Ideal for acoustic guitar, overheads, piano and group vocals. Condenser design for studio-quality vocal and instrument applications. Excels in high-SPL applications. Extended response for smooth, natural sonic characteristics. Low-mass element for superb transient response. Corrosion-resistant contacts from gold-plated XLRM-type connector. Rugged design and construction for reliable performance. Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source. Specifications: Element: Fixed-charge back plate Permanently polarized condenser. Fixed-charge back plate. Permanently polarized condenser. Polar Pattern: Cardioid. Frequency Response: AT2020: 20-20,000 Hz AT2021: 30-20,000 Hz. AT2020: 20-20,000 Hz. AT2021: 30-20,000 Hz. Open Circuit Sensitivity: AT2020: 37 dB (14.1 mV) re 1V at 1