Heritage Audio '73 Junior 500 Series Microphone Preamp

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#J00704000000000
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Slimmed down version of the 1073/500 module.

Following the success of the 1073/500 module, the '73 JR is a 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 '73 junior is a faithful 3 stage all class A 1073 preamp. Styroflex and tantalum capacitors have been used throughout. No corners were cut. A useful all discrete class A hi pass filter has been added, essential for recording everything with the exception of probably kick drum and bass. 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. 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 lunchbox PSU healthier and makes the 73JR independent of the rest of the slots.

FEATURES

  • 80dB 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
  • 50Db Class A Line preamplifier, bridging input impedance, balanced and floating
  • All discrete Class A Ultra High Impedance J-Fet Direct Input on a high quality Neutrik Jack
  • Class A single ended, 2N3055 driven, high headroom output stage
  • PAD: 20dB Mic input attenuation ahead of the input transformer to avoid overloading it
  • HI PASS FILTER: Active all discrete Class A 3rd order Bessel, 80Hz Hi Pass Filter 18dB/octave slope
  • OUTPUT control to allow overloading of the preamp
  • Internal slow turn-on +24v power supply for lower inrush current, which improves your lunchbox performance
  • Carnhill Input and Output transformers
  • 3 gain stage, genuine modular card construction. All active circuitry is on pluggable cards for easier service
  • Marconi style knobs and vintage style engraved pushbuttons

If you don't need to track with EQ, then the '73 JR is the right choice for you.