{"product_id":"heritage-audio-1073-500-mic-pre-1505285-used","title":"Heritage Audio 1073\/500 Mic Pre #1505285 (Used)","description":"When we came with the idea of making our \u003cstrong\u003eHeritage Audio 1073\/500\u003c\/strong\u003e, the first thing we noticed was how many compromises our competitors had to assume to fit their repros into the 500 Series form factor..\u003cbr\u003eWe decided to make exactly zero compromises on ours. This meant making a 3u wide module capable of holding all three vintage accurate transformers, dual concentric switches , pushbuttons and same exact PCB cards. Exactly what the name says. No downsized knobs. No transformers left out. No ICs in place of discrete class A circuitry. Just what the faceplate says: a 1073 in a 500 series format.\u003cbr\u003e\u003cbr\u003eFeatures\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e70dB Class A Microphone preamplifier, HI-LO selectable minimum input impedance, balanced and floating. High gain positions show a higher impedance, ideal for old ribbon mics. \u003c\/li\u003e\n\u003cli\u003e10dB Class A Line Amplifier, Bridging input impedance, balanced and floating. \u003c\/li\u003e\n\u003cli\u003eClass A, single ended, 2N3055 driven high headroom output stage.\u003c\/li\u003e\n\u003cli\u003eHigh Frequency: +\/-16dB shelving at 12 kHz, Baxandall type. \u003c\/li\u003e\n\u003cli\u003eLow Frequency: +\/-16dB with selectable frequency shelving of 35Hz, 60Hz, 110Hz \u0026amp; 220Hz, Baxandall type. \u003c\/li\u003e\n\u003cli\u003eMid Frequency: +\/-18dB peaking, fixed 'Q' , selectable center frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz , and 7.2kHz , dual inductor based. \u003c\/li\u003e\n\u003cli\u003eHigh Pass Filter: 18dB per octave slope, switchable between 50Hz, 80Hz , 160 Hz \u0026amp; 300Hz, inductor based.\u003c\/li\u003e\n\u003cli\u003eEQ Button: Switches the equalizer on or off. \u003c\/li\u003e\n\u003cli\u003ePhase Button: Flips phase 180º. \u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003eSpecifications\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMicrophone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for lo gain ribbon mics. Input is transformer balanced and floating.\u003c\/li\u003e\n\u003cli\u003eLine input impedance: 10KOhms bridging, transformer balanced and floating.\u003c\/li\u003e\n\u003cli\u003eOutput impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 Ohms.\u003c\/li\u003e\n\u003cli\u003eMaximum output: Greater than +26dBm into 600 Ohms, greater than +32dBu into 10KOhms.\u003c\/li\u003e\n\u003cli\u003eTHD: Less than 0.025% at 1Khz, Less than 0.05% at 100Hz.\u003c\/li\u003e\n\u003cli\u003eFrequency response :20Hz (+0.3dB) to 20Khz (-0.2dB).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heritage Audio","offers":[{"title":"Default Title","offer_id":44450674114663,"sku":"150952","price":1650.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/heritage-audio-1073-500-mic-pre-1505285-used_150952_1_e51b849a-b923-4662-854a-103a122ee289.jpg?v=1787094028","url":"https:\/\/vintageking.mom\/products\/heritage-audio-1073-500-mic-pre-1505285-used","provider":"Vintage King","version":"1.0","type":"link"}