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Heritage Audio 73Jr II 500 Series Class A Microphone Preamplifier

Pop the 73 Junior II in your 500 Series rack and dial in 80 dB of classic British-style gain. This high-end mic/DI preamp is modeled after the iconic 1073.

Heritage Audio 73Jr II 500 Series Class A Microphone Preamplifier

$949.00
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Heritage Audio HA73 Junior 500 Series Microphone Preamp

No longer available at zZounds
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Heritage Audio HA73 Junior 500 Series Microphone Preamp, Main
Heritage Audio HA73 Junior 500 Series Microphone Preamp, Alt
Heritage Audio HA73 Junior 500 Series Microphone Preamp, Alt
Heritage Audio HA73 Junior 500 Series Microphone Preamp, Main Heritage Audio HA73 Junior 500 Series Microphone Preamp, Alt Heritage Audio HA73 Junior 500 Series Microphone Preamp, Alt
Load up your 500 Series rack with the '73 Junior, Heritage Audio's 1073-inspired mic preamp and DI. No EQ needed here -- just tons of Class A character!

The Heritage Audio HA73 Junior is a true 1073-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 '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 and bass.

The Line mode allows for re-amping 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 1/4" 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.

- 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 -100dBu.
- Power consumption: 88 mA per rail @+-16VDC.

For support or warranty questions, please contact the manufacturer:
Email: tech@heritageaudio.net
Web: https://heritageaudio.net/contact/

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No longer available at zZounds