{"product_id":"rdl-stm-1","title":"RDL STM-1 – Microphone Preamplifier, Fixed 50 dB Gain","description":"\u003ch2\u003eWhat is the RDL STM-1?\u003c\/h2\u003e\n\u003cp\u003eThe RDL STM-1 is a compact STICK-ON microphone preamplifier with a fixed 50 dB of gain for commercial sound and broadcast applications. It brings any mic-level signal up to line level where a larger or heavier preamp will not fit.\u003c\/p\u003e\n\u003ch2\u003eHow does it work?\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/stm-1.jpg\" alt=\"RDL STM-1 Microphone Preamplifier, Fixed 50 dB Gain\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe input accepts high or low impedance microphones, at 500 Ω balanced or 5 kΩ unbalanced, and provides filtered 24 Vdc phantom per IEC 61938. Two outputs deliver +4 dBu balanced and -10 dBV unbalanced signals. The module runs from 24 Vdc, and operation from 12 Vdc is possible with a 6 dB reduction in headroom. For intercom applications the input will operate directly from a speaker, and RDL pairs the STM-1 with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-st-vox1\"\u003eST-VOX1\u003c\/a\u003e for voice-operated switching.\u003c\/p\u003e\n\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 50 dB gain\u003c\/strong\u003e — Consistent gain brings any mic-level signal into the line-level range of most inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and unbalanced outputs\u003c\/strong\u003e — Outputs provide +4 dBu balanced and -10 dBV unbalanced signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhantom capability\u003c\/strong\u003e — Filtered 24 Vdc phantom per IEC 61938 powers phantom-powered microphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRF-filtered inputs and outputs\u003c\/strong\u003e — Filtering on the inputs and outputs helps reject radio frequency interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 Vdc or 12 Vdc operation\u003c\/strong\u003e — The preamp runs from 24 Vdc or from 12 Vdc with 6 dB less headroom.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025796690156,"sku":"STM-1","price":154.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/stm-1.jpg?v=1793583957","url":"https:\/\/creationnetworks.net\/products\/rdl-stm-1","provider":"Creation Networks","version":"1.0","type":"link"}