RDL STM-2 Microphone-Amplifier

Features:

Mikrofon-Vorverstärker mit niedrigem Rauschpegel
Einstellbarer Ausgangspegel
Hoch- oder niederohmige Eingangsimpedanz
2 symmetrische oder unsymmetrische Ausgänge
Anschluss für Phantomspeisegeräte vorhanden

The STM-2 is a quality low-noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from 35 to 65 dB, two balanced or unbalanced outputs, and available phantom supply input. Its ultra-low distortion and lownoise performance make it the best choice, even when larger preamps could be used. The STM 2 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.


Input: 500 Ω balanced; 5 kΩ unbalanced
Phantom: 24 Vdc; IEC 61938: 2013, Filtered
Outputs (2): +4 dBu 150 Ω 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 Ω 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
Ambient Operating Environment: 0° C to 55° C
Dimensions: Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
Package Type: Cardboard Box
Package Dimensions: 2 x 2 x 4 in.
Shipping Weight: 0.195 lbs.
WEEE weight: 0.145 lbs.