HERITAGE HA73JR2 est dans le panier.
HERITAGE HA73JR2
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HERITAGE HA73JR2

Code de produit : HA73JR2..........

PRÉAMPLIFICATEUR DE MICRO HERITAGE HA73JR2

1 379,00$
Prix sugg. : 1 725,00$
  • Fourchette de prix : 1000,00 - 1499,99$
  • Quantité disponible : 0
  • Disponibilité : Généralement expédié sous 2 à 5 semaines si en stock chez le fournisseur.
73JR II

THE REAL DEAL:

The 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.

Employing 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.

The 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.

The Line mode allows for reamping of prerecorded tracks and it´s perfect for adding some class A color to lifeless recordings.

The 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.

Finally, 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.

WHAT TO LOOK FOR IN A 500 SERIES 73 PREAMP:

There are several compromises usually made when adapting a 73 preamp for the 500 Series, especially the following 3. You won´t find any of these in the 73JRII:

  • Eliminate one gain stage and run only up to 70dB of gain. A “real deal” 73 mic pre must have 3 gain stages for a total of 80dB of gain. Taking the first gain stage out and maxing out the other 2 allows for up to 70 dB of gain, but noise figure and low end at high gain are seriously compromised. The 73JR II uses the full 3 gain stage circuit for up to 80 dB of gain with noise of -125dBu EIN all over the gain positions.
  • Use the readily available +- 16v power from the 500 Series protocol. By doing this, the magic distortion of a 73 amp is compromised. The 73JR II uses a true 24volt on board power supply for identical performace and distortion point.
  • Use of surface mount technology. Although there is no actual drawback in using SMD components, it should be reflected in the price, not merely to enlarge the manufacturer´s profit. No 500 Series 73 mic pre using SMD should cost more than $500. The 73JR II uses only discrete, through hole traditional components and hand labor for that great 70s vibe.
specifications

• 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.
• Line input impedance: 10K Ohms bridging, transformer balanced and floating.
• DI input impedance: Greater than 2 Megohms, unbalanced.
• Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 ohms (factory terminated).
• Maximum output: Greater than +26dBu into 600 ohms.
• THD: Less than 0.025% at 1 Khz, less than 0.05% at 100Hz.
• Frequency response: 20Hz ( +0.3dB ) to 20Khz (-0.2dB)
• Maximum gain: Slightly greater than 80dB
• Noise: Less than -125dBu EIN.
• Power consumption: 86 mA per rail @+-16VDC.

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