STICK-ON Mic Preamps – Which One do I need?

RDL STM-1, STM-2 and STM-3 Microphone Preamplifiers all seem to look alike and indeed they do have some similarities: GENERAL Identical noise, distortion, frequency response, headroom and common mode rejection specifications. Identical power requirements. 24 vdc @ 25 mA or 12 vdc with a 6 dB reduction in headroom. INPUT Balanced or unbalanced Balanced input accepts […]