Millennia HV-3D-4 Four Channel Microphone Preamplifier

SKU: MLHV3D4 MFR: HV-3D/4
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Key Features

  • Capture pristine audio with the Millennia HV-3D-4 microphone preamplifier.
  • Achieve ultra-low noise recordings, perfect for critical studio applications.
  • Experience a wide 65dB gain range, ideal for diverse microphone types.
  • Ensure sonic clarity with high input impedance, optimizing mic performance.
  • Enjoy exceptional build quality, ensuring years of reliable preamp operation.
  • Connect with confidence using versatile connectivity for seamless integration.
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Special Order?Estimated to Ship: 09/08/2025
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Millennia HV-3D-4 Specifications

  • Number of Channels

    4

  • Minimum Gain

    8.5dB

  • Maximum Gain (1.5dB per Step, 36 Steps)

    65dB (up to 75dB on request)

  • Frequency Response (+0 / -3dB)

    Sub 3Hz to beyond 300kHz

  • Noise

    -133dB EIN (60dB Gain, 10Hz - 30kHz, Inputs common)

  • Total Harmonic Distortion + Noise

    <.001%, Typ.<.0005% (<5 ppm) (35dB Gain, 10Hz - 20kHz bandwidth, +27dBu Out)

  • Intermodulation Distortion

    < .0009% (50Hz & 7kHz) 35dB Gain, +27dBu Out

  • Phase Response

    < 2 degrees deviation (35dB Gain, 50Hz - 20kHz bandwidth, +27dBu Out)

  • Common Mode Rejection Ratio

    > 65dB, Typ> 85dB (35dB Gain, 10Hz - 20kHz bandwidth, 100 mV C.M.)

  • Slew Rate

    > 25 Volts per microsecond (35dB Gain, +27dBu Out)

  • Maximum Input Level

    +23dBu (no attenuator pads required) (20Hz - 40kHz)

  • Maximum Output Level

    +32dBu (20Hz - 40kHz)

  • Phantom Input Impedance (1kHz)

    6750Ohms

  • Output Impedance

    2x 24.3Ohms

  • DPA (B&K) Mic Powering

    +130V DC max, (non-phantom)

  • Phantom Powering

    +48 VDC, +/- 2 VDC

  • Power Consumption

    45W Maximum

  • Power Requirements

    100-240V, 50/60Hz

  • Dimensions (W x H x D)

    19 x 3.5 x 12.5" (482.60 x 88.90 x 317.50mm)

  • Weight

    25lbs (11.34kg)

About Millennia HV-3D-4

Experience the unparalleled clarity and precision of the HV-3D-4 Four Channel Microphone Preamplifier, a high-quality audio equipment from the reputable brand, Millennia. This professional-grade preamplifier is designed to magnify the input as much as 1000:1, ensuring that every detail of the sound is captured and amplified without any distortion or coloration.

The HV-3D-4 is equipped with a transformerless design and a matched hi-speed discrete transistor octet, providing an impressive 23dB input headroom. This means no attenuator "pads" are needed, ensuring uncolored timbral accuracy at all dynamic levels.

This versatile preamplifier features an entirely balanced audio path with precision components that maintain signal integrity, with a THD under 5 ppm (.0005%). The result is an effortless, vividly realistic, and musical performance that communicates the artist's intention and individuality with utmost authenticity.

The HV-3D-4 also boasts a laser-trimmed FET-based output stage with 32 dB headroom, capable of driving 1000 foot (300 m) cable runs with ease. This feature, combined with standard 36-step gain controls (1.5 dB per step) that are stereo matched to .08 dB, ensures a seamless and high-quality audio experience.

The HV-3D-4 Four Channel Microphone Preamplifier is built with an ultra-clean universal power supply, gold switches, Mogami Neglex OFC audio wiring, and silver Teflon power wiring. Its durable, welded 16 gauge steel rack chassis ensures longevity and reliability.

This preamplifier also offers a range of options including remote control, DPA (B&K) +130 V mic inputs, DC inputs for ideal performance with dynamic and ribbon microphones, and HDOE Output expansion option for three outs per channel.

Whether you're recording in a studio or capturing the living moment of performance in its original ambience, the HV-3D-4 delivers the authentic sound of vocalists, acoustic instruments, drums, and more. Its transparent signal path has defined "high definition" since its introduction, making it a trusted choice for professionals in symphonic halls, stadium concerts, and studios of all sizes and shapes around the world.

Invest in the HV-3D-4 Four Channel Microphone Preamplifier and step off the upgrade treadmill. This is a tool you can build a career around, a tool that will remain valuable and useful no matter how far your sonic explorations take you.

Millennia HV-3D-4 Features

  • High-quality, professional-grade 4-channel microphone preamplifier from trusted brand Millennia
  • Transformerless design with matched hi-speed discrete transistor octet for uncolored sound amplification
  • Balanced audio path with precision components for maintaining signal integrity
  • Laser-trimmed FET-based output stage with 32 dB headroom for driving long cable runs
  • Versatile and reliable with options for remote control, DPA (B&K) +130 V mic inputs, and DC inputs
  • Durable construction with a welded 16 gauge steel rack chassis, gold switches, and Mogami Neglex OFC audio wiring

Product Documents

User Manual

Key Features

  • Capture pristine audio with the Millennia HV-3D-4 microphone preamplifier.
  • Achieve ultra-low noise recordings, perfect for critical studio applications.
  • Experience a wide 65dB gain range, ideal for diverse microphone types.
  • Ensure sonic clarity with high input impedance, optimizing mic performance.
  • Enjoy exceptional build quality, ensuring years of reliable preamp operation.
  • Connect with confidence using versatile connectivity for seamless integration.

What's in the box:

  • Millennia HV-3D-4 Four Channel Microphone Preamplifier
  • AC Power Cable
  • Owner's Manual
  • Millennia 1 Year Limited Warranty