Millennia HV-3C – 2-Channel Microphone Preamp
OVERVIEW
The Millennia HV-3C sets the benchmark for transparent microphone preamplification. Designed to reveal the purest character of every performance, it offers unparalleled ambience retrieval, vivid realism, and timbral accuracy across the full dynamic spectrum. Whether in classical recording, acoustic sessions, or critical studio applications, it ensures your sound remains true, uncolored, and unrestricted.
Built with a transformerless discrete transistor design, the HV-3C provides up to 60 dB of gain (70 dB on request) without the need for attenuator pads, ensuring effortless headroom and clarity. With THD as low as 0.0005%, stereo-matched stepped gain controls, and rugged construction featuring gold connectors and Mogami Neglex wiring, the HV-3C combines world-class audio performance with rock-solid reliability. This is the tool trusted by top engineers worldwide when transparency matters most.
KEY HIGHLIGHTS
Authentic Transparency:
With its transformerless design and precision-matched transistors, the HV-3C delivers uncolored accuracy across all dynamic levels, ensuring every performance is captured as it truly is.
Effortless Headroom:
Featuring 23 dB input headroom and a laser-trimmed output stage with 32 dB headroom, the HV-3C handles extreme dynamics with ease, driving cable runs up to 1000 feet without signal degradation.
Pristine Build Quality:
Engineered with gold audio connectors, Mogami Neglex OFC wiring, and an ultra-clean toroid power supply, every component is chosen to maintain signal integrity and minimize distortion.
Precision Control:
Its 36-step stereo-matched gain controls (accurate to 0.08 dB) provide precise and repeatable settings, making it ideal for professional recording environments.
Options for Flexibility:
Available with DPA (B&K) +130 V mic inputs and DC inputs, the HV-3C is adaptable for both ribbon and specialty microphones requiring unique powering.
FEATURES
- 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
- DPA (B&K) +130 V mic inputs
- DC inputs for ideal performance with dynamic and ribbon microphones
TECHNICAL SPECS
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: 12 watts maximum
Power Requirements: 100V to 240V, 50/60 Hz
Dimensions:
- Weight — 48.26 cm (19″)
- Height — 4.45 cm (1.75″)
- Depth — 30.48 cm (12″)
Shipping Weight: 6.8 kg (15 lbs.)



















