{"product_id":"heritage-audio-1073-preamplificatore-microfonico","title":"HERITAGE AUDIO 1073 Microphone Preamplifier","description":"\u003ch2\u003eMicrophone Preamplifier\u003c\/h2\u003e\u003cp\u003eThe HERITAGE AUDIO 1073 is a microphone preamplifier designed to fill input module slots in the restoration process of vintage 80 Series audio mixing consoles.\u003cbr\u003eShould outboard mounting be preferred, the HA1073 can be installed in the Power Audio Frame 8 and Rack 2 racks.\u003cbr\u003eParticular attention has been paid to sourcing the correct components that ensure performance is as close as possible to a 1070s unit, with today's possibilities. Custom polystyrene and polypropylene film capacitors have been developed to perfectly match the Siemens Styroflex and Mullard Mustard types from the late 1960s and early 1970s. Custom input transformers have also been designed in collaboration with Carnhill's Oxford transformer factory to meet HERITAGE AUDIO's special needs, ensuring the correct harmonic distortion content and saturation points.\u003cbr\u003eThe HERITAGE AUDIO 1073 is entirely handcrafted in HERITAGE AUDIO's facilities in Spain, using the same wiring and soldering techniques as in the 1970s. The production of a single module takes several days for one of the master builders. All its circuitry is contained on four plug-in cards.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh frequencies: shelf +\/- 16 dB at 12 kHz, Baxandall type.\u003c\/li\u003e\n\u003cli\u003eLow frequencies: +\/- 16 dB with selectable frequency shelving of 35 Hz,\u003c\/li\u003e\n\u003cli\u003e60Hz, 110Hz and 220Hz, Baxandall type.\u003c\/li\u003e\n\u003cli\u003eMid frequencies: +\/- 18 dB peaking, fixed 'Q', selectable center frequencies of 0.36 kHz, 0.7 kHz, 1.6 kHz, 3.2 kHz, 4.8 kHz and 7.2 kHz, dual inductor\u003c\/li\u003e\n\u003cli\u003ebased.\u003c\/li\u003e\n\u003cli\u003eHigh-pass filter: 18 dB per octave slope, switchable between 50 Hz, 80 Hz, 160 Hz and 300 Hz, inductor-based.\u003c\/li\u003e\n\u003cli\u003eEQ button: activates or deactivates the equalizer.\u003c\/li\u003e\n\u003cli\u003ePhase button: 180° phase flip.\u003c\/li\u003e\n\u003cli\u003eMicrophone input impedance: HI, minimum 1200 Ohms, LO, 300 Ohms\u003c\/li\u003e\n\u003cli\u003eminimum. Higher gain positions have gradually higher impedances,\u003c\/li\u003e\n\u003cli\u003eexcellent for ribbon microphones with low gain. The input is transformer balanced and floating.\u003c\/li\u003e\n\u003cli\u003eLine input impedance: 10KOhm bridging, transformer balanced and\u003c\/li\u003e\n\u003cli\u003efloating.\u003c\/li\u003e\n\u003cli\u003eOutput impedance: less than 75 ohms, transformer balanced and\u003c\/li\u003e\n\u003cli\u003efloating, to drive a 600 Ohm load.\u003c\/li\u003e\n\u003cli\u003eMaximum output: greater than + 26 dBm into 600 ohms, greater than\u003c\/li\u003e\n\u003cli\u003e+ 32dBu into 10KOhms.\u003c\/li\u003e\n\u003cli\u003eTHD: less than 0.025% at 1 kHz, less than 0.05% at 100 Hz.\u003c\/li\u003e\n\u003cli\u003eFrequency response: 20 Hz (+ 0.3 dB) to 20 Khz (-0.2 dB).\u003c\/li\u003e\n\u003cli\u003eMaximum gain: slightly over 80 dB.\u003c\/li\u003e\n\u003cli\u003eNoise: less than -100 dBm.\u003c\/li\u003e\n\u003cli\u003ePower consumption: 106 mA @ 24VDC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERITAGE AUDIO","offers":[{"title":"Default Title","offer_id":53993913811277,"sku":"HA1073","price":2590.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/0643\/6173\/files\/95308-large_default.jpg?v=1779947751","url":"https:\/\/musicdelivery.net\/en\/products\/heritage-audio-1073-preamplificatore-microfonico","provider":"Music Delivery","version":"1.0","type":"link"}