Heritage Audio Elite Series HA-73 Single-Channel 1RU Full Rack Microphone Preamplifier

SKU: HAHA73 MFR: HA73
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Key Features

  • Capture pristine audio with the HA-73 microphone preamplifier's low noise circuitry.
  • Achieve versatile sound shaping with an impressive >80dB gain range on this preamp.
  • Enjoy flexible connectivity with XLR and 1/4" inputs for various audio sources.
  • Crafted with robust steel, this single-channel preamp ensures lasting build quality.
  • Experience vintage warmth using this studio preamplifier, perfect for vocals and instruments.
  • Fine-tune your sound; adjust input impedance for optimal microphone performance.
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Heritage Audio HA-73 Specifications

  • Number of Channels

    1

  • Inputs

    1x XLR 3-pin female microphone input
    1x XLR 3-pin female line input
    1x 1/4" TS Hi-Z input

  • Output

    1x XLR 3-pin male output

  • Phantom Power

    +48V (selectable)

  • Gain Range

    >80dB

  • Maximum Output Level

    > +26dB into 600Ohms (internally terminated)

  • Frequency Response

    20Hz (+0.3dB) to 20kHz (-0.2dB)

  • Input Impedance

    Microphone Hi: 1200Ohms minimum
    Microphone Lo: 300Ohms minimum
    Line: 10kOhms bridging

  • Output Impedance

    <75Ohms to drive a load of 600Ohms

  • THD

    <0.025% at 1kHz
    <0.05% at 100Hz

  • Equivalent Input Noise

    < -125dBu

  • Output Noise

    < -100dBu

  • Power Requirement

    HA-PSU04 external power supply

  • Power Consumption

    <95mA at 48VDC

  • Housing Material

    Steel

  • Dimensions (WxDxH)

    17.1 x 7.2 x 1.2" (43.43 x 18.29 x 3.05cm)

  • Weight

    7 lbs (3.18kg)

  • UPC Code

    750536937119

About Heritage Audio HA-73

While maintaining the high standards of Heritage Audio, the Elite Series HA-73 Single-Channel 1RU Full Rack Microphone Preamplifier offers a professional, high-quality, and reliable audio solution. This versatile preamplifier is built to the same exacting specifications as the acclaimed '73JR and DMA73 Heritage Audio models, ensuring a superior sound experience.

This preamplifier is a testament to the brand's commitment to quality, leveraging meticulous hand-soldering techniques and modern manufacturing methods. The result is a durable and reliable product that offers an affordable alternative to entry-level brands without compromising on quality.

The HA-73 Elite is equipped with industry-standard Carnhill transformers, hand-wound in St Ives, England, which are key components in achieving that coveted vintage sound. This preamplifier is designed to enhance the sound of almost any source, delivering rich, musical qualities that have been appreciated by audio professionals for generations.

The HA-73 Elite also includes the same high-performing JFET DI circuit found in the '73JR, along with a fully discrete class A high pass filter. With 80 dB of available gain and dedicated mic, line, and instrument inputs, this preamplifier is capable of bringing your microphones and instruments to life with a vintage vibe and thickness.

The HA-73 Elite features a range of controls including gain, output trim, -20db pad, polarity reverse, a high pass filter, and +48v phantom power. It is housed in a rugged 1RU British steel chassis and utilizes an external power supply for low noise operation. The HA-73 Elite is 100% made by Heritage Audio, ensuring the highest quality pots, switches, and Carnhill input and output transformers. This preamplifier is a testament to Heritage Audio's commitment to delivering professional, high-quality, and reliable audio equipment.

Heritage Audio HA-73 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
  • 10dB Class A Line Amplifier, Bridging input impedance, balanced and floating
  • Class A, single ended, 2N3055 driven high headroom output stage
  • High Frequency: +/-16dB shelving at 12 kHz, Baxandall type
  • Low Frequency: +/-16dB with selectable frequency shelving of 35Hz, 60Hz, 110Hz & 220Hz ,Baxandall type
  • Mid Frequency: +/-18dB peaking, fixed 'Q' , selectable center frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz and 7.2kHz , dual inductor based
  • High Pass Filter: 18dB per octave slope, switchable between 50Hz, 80Hz, 160 Hz & 300Hz, inductor based
  • EQ Button: Switches the equalizer on or off
  • Phase Button: Flips phase 180 deg.

Product Documents

User Manual

Key Features

  • Capture pristine audio with the HA-73 microphone preamplifier's low noise circuitry.
  • Achieve versatile sound shaping with an impressive >80dB gain range on this preamp.
  • Enjoy flexible connectivity with XLR and 1/4" inputs for various audio sources.
  • Crafted with robust steel, this single-channel preamp ensures lasting build quality.
  • Experience vintage warmth using this studio preamplifier, perfect for vocals and instruments.
  • Fine-tune your sound; adjust input impedance for optimal microphone performance.

What's in the box:

  • Heritage Audio Elite Series HA-73 Single-Channel 1RU Full Rack Microphone Preamplifier
  • External Power Supply
  • Heritage Audio 1 Year Limited Warranty