{"title":"Radio Design Labs","description":null,"products":[{"product_id":"radio-design-labs-stm-3-high-gain-microphone-preamplifier","title":"Radio Design Labs STM-3 High Gain Microphone Preamplifier","description":"\u003cp style=\"text-align: left;\"\u003eThe STM-3 is very flexible, with gain adjustment from 45 to 75 dB, two balanced or unbalanced outputs, and available phantom supply input. Its low-distortion and low-noise performance make it the best choice, even when larger preamps could be used. The STM 3 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.\u003c\/p\u003e\n\n\n\n\u003chr noshade\u003e\n\n\u003cp style=\"font-size: 130%; text-align: left;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\n\u003cli style=\"text-align: left;\"\u003eLow-Noise, High-Gain, Mic Preamp\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eAdjustable Output Levels\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eHigh or Low Impedance Mic Inputs\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eMic Input to Line Outputs\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eTwo Balanced or Unbalanced Outputs\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePhantom Capability\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eRF-Filtered Inputs\u003c\/li\u003e\n\n\n\n\u003chr noshade\u003e\n\n\u003cp style=\"font-size: 130%; text-align: left;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\n\u003cli style=\"text-align: left;\"\u003eInput:500 Ω balanced; 5 kΩ unbalanced\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePhantom:24 Vdc; IEC 61938: 2013, Filtered\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eOutput (2):+4 dBu 150 Ω balanced; -10 dBV unbalanced\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eFrequency Response:50 Hz to 30 kHz (± 1.5 dB)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eGain:Adjustable 45 to 75 dB\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eTHD+N:\u0026lt; 0.05% (50 dB gain)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eCMRR:\u0026gt; 50 dB (50 Hz to 20 kHz)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eResidual Noise:\u0026lt; -70 dB (below +4 dBu, 150 Ω source)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eHeadroom:\u0026gt; 20 dB (24 Vdc supply); 14 dB (12 Vdc supply)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePhantom Power Input:24 Vdc @ 10 mA maximum\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eAmbient Operating Environment:0° C to 55° C\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePower Requirement:GROUND-REFERENCED, 24 Vdc @ 25 mA\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eDimensions:Height: 0.7 in. (1.7 cm); Width: 3 in. (7.6 cm); Depth 1.6 in. (3.9 cm)\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePackage Type:Cardboard Box\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003ePackage Dimensions:2 x 2 x 4 in.\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eShipping Weight:0.195 lbs.\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003eWEEE weight:0.145 lbs.\u003c\/li\u003e","brand":"Radio Design Labs","offers":[{"title":"Default Title","offer_id":50859005215008,"sku":"STM-3","price":545.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3793\/9232\/files\/STM3_7e63b453-1822-42da-ae71-003727423589.png?v=1762329740"}],"url":"https:\/\/megamusiconline.com.au\/collections\/radio-design-labs.oembed","provider":"Mega Music","version":"1.0","type":"link"}