Millennia HV-3C Stereo Microphone Preamplifier
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Description
The HV-3C Stereo Microphone Preamplifier is an entirely double-balanced, extremely wide dynamic range stereo microphone preamplifier intended for demanding audio recording. In it Millenia combines precisely matched, discrete bipolar transistors with a laser trimmed DC coupled FET-based output driver stage. Unlike standard mic preamplifiers, the HV-3C never unbalances or rebalances the original signal, thus maintaining the highest degree of signal integrity.
Features- High-speed transformerless design 23dB input and 32dB output headroom No attenuation pads required Entirely balanced audio path Laser trimmed FET-based output THD+N less than 5 PPM (.0005%) Matched discrete transistor octet front end Precision components throughout Gold audio connectors and switches Standard 36-step gain control (1.5dB per step) Stereo gain matched to .08dB OFC audio wiring, silver Teflon power wiring Ultra-clean torroid power supply Welded 16-gauge 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) | 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. |
The HV-3C Stereo Microphone Preamplifier is an entirely double-balanced, extremely wide dynamic range stereo microphone preamplifier intended for demanding audio recording. In it Millenia combines precisely matched, discrete bipolar transistors with a laser trimmed DC coupled FET-based output driver stage. Unlike standard mic preamplifiers, the HV-3C never unbalances or rebalances the original signal, thus maintaining the highest degree of signal integrity.
Features- High-speed transformerless design 23dB input and 32dB output headroom No attenuation pads required Entirely balanced audio path Laser trimmed FET-based output THD+N less than 5 PPM (.0005%) Matched discrete transistor octet front end Precision components throughout Gold audio connectors and switches Standard 36-step gain control (1.5dB per step) Stereo gain matched to .08dB OFC audio wiring, silver Teflon power wiring Ultra-clean torroid power supply Welded 16-gauge 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) | 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. |
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