Heritage Audio

'73 Junior

Microphone Preamp

500 Series

The mic pre you’ve been dreaming about, at a price you never imagined possible.

The ’73 Jr is a chip off the old block, raised on Carnhill transformers and hand wired with care, it delivers the same massive tone as the 1073-500, in single 500 series space.

Following his successful big brother, the 1073/500, the new ´73JR is a mic preamp 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!

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 sec to reach full voltage ).This makes your lunchbox PSU healthier and makes the 73JR independent of the rest of the slots.

Specifications:
  • Made to the same specifications as the acclaimed ´73JR and DMA73 models.
  • Industry standard Carnhill transformers hand wound in St Ives, England.
  • 80dB, 3 stage fully discrete class A mic preamp.
  • Line input on separate XLR for adding fat and warmth to prerecorded tracks.
  • 20dB PAD on the mic input to avoid overloading the input transformer when desired.
  • LOZ, switches the input impedance of the mic transformer from 200 to 50 ohm.
  • 80 Hz hi pass filter. Fully discrete class A.
  • Ultra high impedance, JFET based D.I.
  • 1 Rack unit format.
  • External universal power supply for worldwide use.