{"product_id":"rdl-sta-2a","title":"RDL STA-2A","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe STA-2A is a dual-channel, line-level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 k? and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity to +24 dB using a 25-turn precision audio taper trimming potentiometer. The output line driver circuits are designed to drive long balanced audio lines into 600 ? loads.\u003c\/p\u003e\u003cp\u003eThe STA-2A features wideband circuitry for excellent phase response, low noise, low distortion and exceptional audio clarity. RDL's SupplyFlex power input configuration is included in the STA-2A. The power supply input may be fed from a floating (not ground-referenced) 24 Vdc power source, from a bipolar power supply (+\/- 12 Vdc or +\/-15 Vdc) or from a ground-referenced 24 Vdc power supply.\u003c\/p\u003e\u003cp\u003eMany audio products provide optimum performance when feeding into a bridging input, but may not provide the output needed to directly drive low-impedance lines terminated with 600 ? transformers. The STA-2A is specifically designed for such installations, and is also ideal in installations requiring high gain in line-level audio transmission.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUp to 24 dB Gain in Audio Lines\u003c\/li\u003e\n\u003cli\u003eConversion between Unbalanced and Balanced\u003c\/li\u003e\n\u003cli\u003eConversion between High and Low Impedance\u003c\/li\u003e\n\u003cli\u003eLow-Impedance, High-Current Line Drivers\u003c\/li\u003e\n\u003cli\u003eDual-Channel Line-Level Preamplifiers\u003c\/li\u003e\n\u003cli\u003eHigh Gain, High Output, High Performance\u003c\/li\u003e\n\u003cli\u003eRDL® SupplyFlex™ Power Input Configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable class=\"table1\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmps per STA-2A\u003c\/td\u003e\n\u003ctd\u003e2 identical circuits (stereo or dual mono operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs (2)\u003c\/td\u003e\n\u003ctd\u003e20 k? balanced or unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal (for +4 dBu out)\u003c\/td\u003e\n\u003ctd\u003e-20 dBu (-18 dBV) to +18 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Level\u003c\/td\u003e\n\u003ctd\u003e+24 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs (2)\u003c\/td\u003e\n\u003ctd\u003e150 ? balanced or 75 ? unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\n\u003cbr\u003e\u003cb\u003eOutput Signal:\u003c\/b\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced\u003c\/td\u003e\n\u003ctd\u003e+4 dBu nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnbalanced\u003c\/td\u003e\n\u003ctd\u003e6 dB below balanced line level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output Level\u003c\/td\u003e\n\u003ctd\u003e+25 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 100 kHz (± 0.05 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.004% (unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIMD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.005% (unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise below +4 dBu\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; -90 dB (unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; -80 dB (unity gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadroom\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 20 dB (above +4 dBu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003eUnity +24 \/ -14 dB (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCMRR\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 60 dB (50 Hz to 120 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Operating Environment\u003c\/td\u003e\n\u003ctd\u003e0° C to 55° C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eGROUND-REFERENCED or FLOATING, 24 Vdc @ 50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eCardboard Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e2 x 2 x 4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e0.2 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEEE weight\u003c\/td\u003e\n\u003ctd\u003e0.145 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff code\u003c\/td\u003e\n\u003ctd\u003e8518.40.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":43895102963755,"sku":"RDL-STA-2A","price":215.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/3019\/5243\/files\/rdl-sta-2a-3__66639.1682443532.1280.1280.jpg?v=1775684018","url":"https:\/\/www.empirepro.com\/products\/rdl-sta-2a","provider":"Empire Pro","version":"1.0","type":"link"}