RDL STM-2X Switched Microphone Preamplifier - 35 to 65 dB gain

Radio Design Labs STM-2X Switched Microphone Preamplifier - 35 to 65 dB gainFeatures: Quiet Switching of Condenser Microphone Remote Microphone Soft-Switching Switch a Mic-Level Source to a Mic or Line Level Output Remote Toggle Switch or Push-to-Talk Button Adjustable Preset Gain on Microphone Source The STM-2X is the ideal choice in many installations where a microphone preamplifier is required and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control particularly if condenser microphones are used. Input: 500 ? balanced; 5 k? unbalanced Phantom: 24 Vdc; IEC 61938: 2013 Filtered Outputs (2): Line Level: +4 dBu 150? balanced / Mic Level: -45 dBu 150? balanced Headroom: 20 dB Gain: Line: Adjustable 35 to 65 dB; Mic Level Output: Adjustable -15 to 15 dB Frequency Response: 50 Hz to 30 kHz (? 1.5 dB) THD+N: < 0.05% (50 dB gain) Residual Noise ON: < -70 dB (below to +4 dBu; 150 ? source @ 50 dB gain) OFF Attenuation: 100 dB (1 kHz) 80 dB (5