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 Ω balanced; 5 kΩ unbalanced |
|---|---|
| Phantom | 24Vdc; IEC 1938: 1996‑12, Filtered |
| Outputs (2) | Specifications |
| Line Level | +4 dBu 150Ω balanced |
| Mic Level | ‑45 dBu 150Ω balanced |
| Headroom | > 20 dB |
| Line Level Output | Adjustable 35 to 65 dB |
| Mic Level Output | Adjustable ‑15 to 15 dB |
| Frequency Response | 50 Hz to 20 kHz (+/‑1 dB) |
| THD+N | < 0.05% (50 d gain) |
| Residual Noise ON | < ‑70 dB (below to +4 dBu; 150 Ω source @ 50 dB gain) |
| OFF Attenuation | > 100 dB (1 kHz)> 80 dB (50 Hz to 20 kHz) |
| Switch Control Input | Connect to ground to activate signal; 0.5 mA maximum current required |
| Switching Time | < 5 ms (soft‑switching transition on or off) |
| CMRR | > 60 dB (50 Hz or 20 kHz) |
| Phantom Power Input | 24 to 33 Vdc @ 10 mA maximum |
| Power Requirement | Ground‑Referenced, 24 to 33 Vdc @ 25 mA |
| Dimensions (H x W x D) | 0.7" (17.78 mm) x 3" (76.2 mm) x 1.6" (40.64 mm) |
| Weight | 0.145 lbs (0.66 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
