Professional Low Noise Microphone Preamplifier STM-2

Input: 500 ohm balanced; 5 kohm unbalanced

Phantom: 24 Vdc; IEC 61938: 2013, Filtered

Outputs (2): +4 dBu 150 ohm balanced; -10 dBv unbalanced

Frequency Response: 50 Hz to 30 kHz (+/- 1.5 dB)

Gain: Adjustable 35 to 65 dB

THD+N: 0.05% (50 dB Gain)

CMRR: 50 dB (50 Hz to 20 kHz)

Residual Noise: -70 dB (below +4 dBu 150 ohm source @ 50 dB gain)

Headroom: 20 dB (24 Vdc supply) 14 dB (12 Vdc supply)

Phantom Power Input: 24 to 33 Vdc @ 10 mA maximum

Power Requirement: GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA