{"product_id":"heritage-audio-ha73jr2","title":"Heritage Audio HA73JR2 – '73 Junior API 500 Series Microphone Preamplifier Module","description":"\u003cp\u003eThe 73JRII  is the 2021 update to the already classic 73JR, a true 73 style mic preamp in a single 500 series slot with some added features that will cover all the recording needs for engineers and musicians that don´t find the need to track with eq.\u003c\/p\u003e\u003cp\u003eEmploying only discrete circuitry and conventional components, the 73JRII is a faithful 3 stage all class A 73 preamp. Styroflex and tantalum capacitors have been used throughout.  No corners were cut.\u003c\/p\u003e\u003cp\u003eThe useful all discrete class A hi pass filter has been updated, making it sweepable from 20 to 220 Hz. Now it is even easier to make your low end tighter without affecting desired frequencies.\u003c\/p\u003e\u003cp\u003eThe Line mode allows for reamping of prerecorded tracks and it´s perfect for adding some class A color to lifeless recordings.\u003c\/p\u003e\u003cp\u003eThe smart switched DI (automatically switches from MIC to DI mode when inserting a MONO ¼” jack) is an all discrete class A JFET circuit ahead of the MIC transformer, so all the juice is there. Since its introduction in 2013, it has become a classic DI for bass.\u003c\/p\u003e\u003cp\u003eFinally, special care has been taken with power handling, implementing internal +24v slow turn on regulation (about 20 seconds to reach full voltage).This makes your 500 series enclosure´s power supply healthier and makes the 73JR independent of the rest of the slots.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Microphone 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\u003e\u0026lt;\u0026gt; Line input impedance: 10K Ohms bridging, transformer balanced and floating.\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; DI input impedance: Greater than 2 Megohms, unbalanced.\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 ohms (factory terminated).\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Maximum output: Greater than +26dBu into 600 ohms.\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; THD: Less than 0.025% at 1 Khz, less than 0.05% at 100Hz.\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Frequency response: 20Hz ( +0.3dB ) to 20Khz (-0.2dB)\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Maximum gain: Slightly greater than 80dB\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Noise: Less than -125dBu EIN.\u003c\/li\u003e\n\u003cli\u003e\u0026lt;\u0026gt; Power consumption: 86 mA per rail @+-16VDC.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heritage Audio","offers":[{"title":"Default Title","offer_id":68264130937059,"sku":"HA73JR2","price":1499.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/8918\/4483\/files\/HA73JR2_cbcb43ca-14bc-457f-900f-89ccf477b340.jpg?v=1793991868","url":"https:\/\/laboitemusicale.com\/fr\/products\/heritage-audio-ha73jr2","provider":"La Boîte Musicale","version":"1.0","type":"link"}