Millennia HV-3C

The Millennia HV-3C is an updated design of the HV-3B two channel mic preamp, with improved mechanical design and cosmetics, and standard 36 step gain control. Combining a precisely matched octet of discrete bipolar transistors with a laser trimmed DC coupled FET-based output driver stage, the HV-3C is an entirely "double balanced," extremely wide dynamic range stereo microphone preamplifier intended for demanding acoustic recording.

Millennia HV-3C At-a-Glance

• Super-clean Signal Path
• High Headroom
• Audiophile-quality Sound

• Super-clean Signal Path
Unlike "textbook" mic preamplifiers, the HV-3C signal path never unbalances or rebalances the original signal - thus maintaining a high degree of signal integrity. Over 20,000 channels of HV-3 micamps are already in use by a who's-who in critical acoustic recording.
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.

• High Headroom
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. HV-3C uses the identical preamps as found in the HV-3D 8-ch units.

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

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

Options
• 24-bit 192 kHz A/D “POW-R” converters (available Winter 2009)
• DPA (B&K) +130 V mic inputs
• DC inputs for ideal performance with dynamic and ribbon microphones

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

Noise:
• 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..