HV-3D-4
Four Channel Microphone Preamplifier
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 dBu 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
- Gold switches
- Mogami Neglex OFC audio wiring
- Silver Teflon power wiring
- Welded 16 gauge steel rack chassis
Options:
- Ribbon optimized DC coupled input - $100/channel
- Extra 10dB gain - no charge
- DPA 130V input - $300/channel
- Dante, AES or MADI digital outputs
Specifications:
- 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)
Inter-modulation 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, 21 lbs.