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Millennia HV-3C

Stereo Microphone and Instrument Preamplifier

Millennia HV-3C

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Product Description for the Millennia HV-3C

Digital Delivery Demands Total Clarity

Microphone preamplifiers magnify the input as much as 1000:1. There’s no “Undo” after this point. Coloration or distortion become part of the signal. Lost information can never be recovered. Data compression algorithms (MPG, AC3, DTS etc.) are unable to distinguish signal from noise, so preserving the clarity and integrity of the signal through the recording and production process is critical to communicating the artist’s intention and individuality..

Purity Creates Possibilities

Digital workstations offer unlimited tracks, total creative freedom. But even advanced plug-ins can’t “uncolor” sound, can’t restore lost upper harmonic partials or the ambience that contained the living moment of performance. The HV- 3C is designed to transmit microphone signals to recording devices unaltered, not to impose a “signature” on basic tracks. Starting with an open, transparent signal puts you on the path to creative exploration. No matter how subtle or attractive, a colored “tweaked” signal destroys options at every link in the chain

Experiment, Experience, Excellence

The HV-3C was developed to meet our need for a mic pre accurate enough for the world’s finest classical soloists and ensembles. Textbook theory remains incomplete. Test instrument readings don’t reliably measure the quality of the listening experience. We took a rigorously empirical approach, exploring many design approaches by attempting to perfect each one. Experimental designs were evaluated on the lab bench and in our own production facility, where we could compare recordings directly to live performances. We proved to ourselves that there’s no such thing as a straight wire with gain. But the HV-3C’s transformerless input, balanced audio path, minimal amplifier design has brought us closer than any other to our goal of absolute accuracy and uncompromised sonic realism. Today, over 20,000 channels are performing in symphonic halls, stadium concerts and studios of all sizes and shapes. Whatever the venue or musical style, the HV-3C delivers the authentic sound of vocalists, acoustic instruments, drums, triple guitar stacks... delighting artists, engineers, producers and listeners around the world.

You Can Pay More, You Can’t Spend Less

Initial purchase price is never a design target at Millennia Media. We strive to maximize return on investment and minimize total cost of ownership. The HV-3C is the mic pre of choice at the highest levels of the profession: it will remain a valuable and trusted tool no matter how far your sonic explorations take you. This is a tool you can build a career around. Acquiring an HV-3C is a step off the upgrade treadmill: a step that will ultimately save you much more than your initial investment.


Authentic Transparency for Unrestricted Creativity

  • Unsurpassed ambience retrieval
  • Transformerless design with matched hi-speed discrete transistor octet has 23 dB input headroom: no attenuator “pads” needed
  • Uncolored timbral accuracy at all dynamic levels
  • Entirely balanced audio path with precision components maintains signal integrity: THD under 5 ppm (.0005%)
  • Effortless, vividly realistic, musical performance
  • Laser-trimmed FET-based output stage has 32 dB headroom: drives 1000 foot (300 m) cable runs with ease
  • Standard 36-step gain controls (1.5 dB per step) are stereo matched to .08 dB
  • Ultra-clean toroid power supply
  • Gold audio connectors and switches
  • Mogami Neglex OFC audio wiring
  • Silver Teflon power wiring
  • Welded 16 gauge steel rack chassis
  • Minimum Gain : 8.5 dB
  • Maximum Gain
  • (1.5 dB per step, 36 steps)  :65 dB (up to 75 dB on request)
  • Frequency Response
  • +0 / -3 dB : sub 3 Hz to beyond 300 kHz


  • 60 dB Gain, 10 Hz - 30 kHz, Inputs common : -133 dB EIN
  • Total Harmonic Distortion + Noise
  • 35 dB Gain, 10 Hz - 20 kHz bandwidth, +27 dBu Out : < .001%, Typ. < .0005% (< 5 ppm)

Intermodulation Distortion

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

Phase Response

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

Common Mode Rejection Ratio

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

Slew Rate

  • 35 dB Gain, +27 dBu Out : > 25 volts per microsecond

Maximum Input Level

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

Maximum Output Level

  • 20 Hz - 40 kHz  : +32 dBu

Phantom Input Impedance

  • 1 kHz : 6,750 ohms
  • Output Impedance : 24.3 ohms (x2)
  • DPA (B&K) Mic Powering : +130 V dc, max, (non-phantom)
  • Phantom Powering : +48 V dc, +/- 2 V dc
  • Power Consumption : 12 watts maximum
  • Power Requirements : Selectable: 100-120, 200-240 V ac, 50/60 Hz
  • Dimensions/Shipping Weight : 19” W x 1.75” H x 12” D, 15 lbs.
Brand Millennia
Weight 8.0000
Dimensions (WxHxD) No

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