STM-1 Microphone Preamplifier (Radio Design Labs)
The STM-1 is a compact, low-cost microphone preamplifier with a fixed 50 dB gain, designed for commercial sound and broadcast use. It operates from 24 Vdc (single-ended) with possible 12 Vdc operation at reduced headroom. Power supply not included
Highlights
- fixed 50 dB gain
- compact, low-cost preamplifier
- 24 Vdc single-ended operation
Pros
- fixed 50 dB gain
- compact size
- low-cost design
- suitable for mic-level to line-level interfacing
- operates from 24 Vdc
Cons
- power supply not included
- 12 Vdc operation reduces headroom
- limited to single-ended supply input
Best For
Features
- Low-cost, quality microphone preamplifier for commercial sound and broadcast use
- Compact size suits installations where larger preamps are impractical
- Fixed 50 dB gain to bring mic-level signals to line-level for most line inputs
- Single-ended supply input operating from 24 Vdc; 12 Vdc operation possible with 6 dB headroom reduction
