BM-621USB USB Conference Microphone Designed for live broadcast on the network, network conferences, or voice chat Chip USB2.0 sound card is suitable for iOS, Windows and the Mac, for free, plug and play Built cardioid capsule differs large capture range, an accurate and clean oriented sound quality. RFI shielding technology protects against interference in cell phones Switch low frequency 150 Hz is effective in reducing the absorption of ambient noise CHARACTERISTICS: • Power Mode: USB (DC 5V / 500 mA) • Data transfer: USB-cable • Sampling frequency: 44.1 / 48 kHz • Bitrate: 16 bits • Capsule: condenser capsule Φ12mm • Polar pattern: cardioid • Frequency Response: 50 Hz to 16 kHz • Sensitivity: -5dBFS ± 2dBFS • Distortion: ≤1,5% at 1kHz • Signal / noise ratio: ≥65 dB • Low Cut: 150 Hz, 6 dB / oct.