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Millennia Media Inc HV3C
Stereo Mic Preamp


Combining a precisely matched octet of discrete bipolar transistors with a laser trimmed DC coupled FET-based output driver stage...
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Millennia Media Inc HV3C
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Combining a precisely matched octet of discrete bipolar transistors with a laser trimmed DC coupled FET-based output driver stage, the HV-3C (tm) is an entirely "double balanced," extremely wide dynamic range stereo microphone preamplifier intended for demanding acoustic recording. Unlike "textbook" mic preamplifiers, the HV-3C signal path never unbalances or rebalances the original signal — thus maintaining a high degree of signal integrity.

Unlike preamps using vacuum tubes, IC function modules and audio transformers (all of which can lend their own audio coloration) the Millennia HV-3C is precisely optimized towards capturing the subtlest detail of music and ambience. With +23 dBu native input headroom, the HV-3C requires no input pads, attenuators, or switch points as found on common textbook preamp designs - thus avoiding yet another source of sonic degradation. Moreover, with its +32 dBu output headroom, ultra-high dynamic stability and linearity is assured. NOTE: The HV-3C is a recently-updated version of the HV-3B two channel mic preamp, with improved mechanical design and cosmetics, and standard 36 step gain control. HV-3C uses the identical preamps as found in the HV-3D 8-ch units.

HV-3C signal path from input through output is entirely balanced with a minimum amplifier topology. Uncompromising circuit design with meticulous selection and hand-matching of critical components assures consistently transparent audio performance at all dynamic excursions and frequency extensions.


  • High speed transformerless design
  • 23dB Input & 32dB Output headroom
  • No pads (attenuators) required
  • Entirely balanced audio path
  • Laser trimmed FET-based output
  • THD+N less than 5 PPM (.0005%)
  • Matched discrete transistor octet front-end
  • Optional Bruel & Kjaer (DPA) +130V mic inputs
  • Optional 24 bit, 192 kHz "POW-R" A/D converters
  • Optional "DC Inputs" - Ideal for ribbon mics
  • Precision componentry throughout
  • Gold audio connectors & switches
  • Standard 36-step gain control (1.5 dB per step)
  • Stereo gain matched to .08 dB
  • OFC audio wiring, silver teflon power wiring
  • Ultra-clean toroid power supply
  • Welded 16 gauge steel rack chassis
  • Unsurpassed ambience retrieval
  • Effortless, lifelike musical performance at ALL dynamic levels


  • Minimum Gain: 8.5 dB
  • Maximum Gain (1.5 dB per step, 36 steps): 60.5 dB (up to 78 dB on request)
  • Frequency Response (+0/-3dB): sub 4 Hz to beyond 300 kHz
  • Frequency Response, Stereo Deviation: <.04 dB
  • Noise @ 60 dB gain, 10Hz-30kHz, Inputs common: -133 dB EIN
  • Noise @ 60 dB gain, 10Hz-30kHz, 50 ohm source: -130 dB EIN
  • Noise @ 60 dB gain, 10Hz-30kHz, 150 ohm source: -128 dB EIN
  • Total Harmonic Distortion + Noise, 35 dB gain, 10 Hz-20kHz bandwidth, +27 dBu out: <.001%, Typ. <.0005% (<5 PPM)
  • Intermodulation Distortion (50Hz & 7kHz) 35 dB gain, +27 dBu out: <.0009%
  • Phase Response 35dB gain, 50Hz-20kHz bandwidth, +27 dBu out: <2 degrees deviation
  • Phase Response, Stereo Deviation 35dB gain, 20Hz-40kHz bandwidth, +27 dBu out: <1/2 degree deviation
  • Common Mode Rejection Ratio 35dB gain, 10Hz-20kHz bandwidth, 100 mV C.M.: >65dB, Typ >85dB
  • Slew Rate 35dB gain, +27dBu out: >25 Volts per microsecond
  • Maximum Input Level 20Hz-40kHz: +23 dBu
  • Maximum Output Level 20Hz-40kHz: +32 dBu
  • Interchannel Crosstalk 35 dB gain, 1kHz, +27 dBu all outputs: Better than -120dB (>20 bits)
  • Phantom Input Impedance @ 20Hz: 6,700 ohms
  • Phantom Input Impedance @ 20kHz: 6,800 ohms
  • Output Impedance: 24.3 ohms (x2)
  • B&K (DPA) Mic Powering: +130 VDC, max, direct (non-phantom) powered
  • Phantom Powering: +48 VDC, +/-2VDC
  • Power Consumption, Max: 45 Watts, maximum
  • Power Requirements: 100 to 240 VAC, 50/60 Hz
  • Dimensions (W x D x H): 19" x 12" x 3.5"
130V DPA Mic Input Option
Millennia Media Inc BK 130V DPA Mic Input Option
130V mic input option, adds 4-pin XLR B&K (DPA mics 4003, 4004, 4012 and 4016) high voltage inputs to rear panel, in addition to standard 3-pin phantom XLR input (per input).  Works with Millenia HV-C3, HV-3D, HV-3R,and  M-2b ...
294.45 300.00

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DC Input Option (for Preamps)
Millennia Media Inc DC DC Input Option (for Preamps)
DC input option. Available on all  microphone preamps. Adds direct DC-coupled input for dynamic & ribbon mics. Improves sonic performance with all dynamic microphones.  3-pin phantom XLR input comes standard with mic preamps ...
95.19 100.00 5

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