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Millennia HV-3D-8-MADI | Millennia Music & Media Systems


Eight Channel Microphone Preamplifier

truth in engineering


Authentic Transparency for Unrestricted Creativity

  • Unsurpassed ambience retrieval
  • Transformerless design with matched hi-speed discrete transistor octet has +23 dBu 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 universal power supply life-rated for over 500,000 hours MTBF (90-240VAC)
  • Grayhill mil-spec gold switching
  • 24-bit 192 kHz eight-channel MADI output for HV-3D
  • External Clocking from MADI stream
  • Optical and BNC MADI input and output connectors
  • External Word Clock input
  • Industry standard i64 MADI style card
  • Welded 16 gauge steel rack chassis
  • Lovingly hand-crafted in Northern California

$5,906 US Street Price


  • Ribbon optimized DC coupled input - $100/channel
  • Extra 10dB gain - no charge
  • DPA 130V input  - $300/channel


Minimum Gain

8.5 dB

Maximum Gain (1.5 dB per step, 36 steps)

60 dB (up to 70 dB on request)

Frequency Response (+0 / -3 dB)

sub 8 Hz to beyond 300 kHz (sub 3 Hz by request)

Noise (60 dBu 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, +/- 4 V dc

Power Consumption

45 watts maximum

Power Requirements

100V to 240V, 50/60 Hz

Dimensions/Shipping Weight

19” W x 3.5” H x 12.5” D, 23 lbs.

Reviews & Awards

Lots of Pure Clean Gain 
Monte Vallier, EQ

The sound is great -- sweet, refined, full of dynamics - fabulous on grand piano.
Tony Faulkner, Greenroom Productions, UK owner of HV-3D and M-2B preamplifiers

The HV-3D is one of the finest pieces of gear with which I have ever had the pleasure to work. I use three of them to record the National Symphony Orchestra at the Kennedy
Center, with spectacular results.
Charles Lawson, Senior Recording/Production
Engineer WETA Radio, Washington, DC

This is an outstanding mic preamp. I’ve never heard our mics sound this clean on piano. We’ve been using our [46 channels of] Millennia preamps on everything... 
Jack Renner, President, Telarc Records International

Our HV-3D is primarily dedicated to making a great drum sound instantly available. It’s truly a beautiful thing and it sounds awesome... The HV-3D has added so much more
to the feeling of creativity in our studio and I just want to say thanks for making such a great unit. It’s a solid piece of work, looks great and it sounds amazing - I’m in love!
John Haggins, DigiNote Studio, Miami Beach, FL

“For the HBO Live Broadcast of The Rolling Stones from Madison Square Garden 1/18/03, we used 82 channels of HV-3s on stage to drive about 800 feet of wire five stories down to the Silver Truck. I am absolutely amazed at how good it sounded with that length of cable! Those HV-3s could drive the Atlantic phone cable to London!”
David Hewitt, Chief Engineer, Remote Recording Services

I like to get on tape (or on hard disc) what I hear in the room. When I was looking for a new mic pre, the main concerns were - no colouration, transparency and the lowest
possible noise floor and reliability, because we record 360 days a year. I simply could not find anything better than the HV-3D.
Jörg Mayr, Audio Engineer, Music Producer
Vienna Symphonic Library

"Over a period of months, I used the HV-3 on all types of sessions, ranging from stereo-miked chamber ensembles to multi-track pop sessions. In all cases, the HV-3 provided an absolutely faithful rendition of the microphone's sound, without imparting any coloration of its own... An excellent value offering impeccable audio specs, first-rate construction, and sonic transparency under any conditions. The Millennia Media HV-3 is...for those who seek absolute purity in reproduction." 
MIX Magazine, Feature Review By George Petersen, Editor

"Just to let you know, the recording we did of the Penderecki Credo won this year's Grammy for "Best Choral Recording". We used 16 channels of Millennia pre-amps on stage." THANKS FOR THE GREAT SOUND!! 
Don Harder, Chief Audio Engineer, Canadian Broadcasting Company (March 2001)

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Contact Info

Millennia Media, SPC
6411 Capitol Avenue
Diamond Springs, CA 95619
T (+1) 530-647-0750

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