HV-3D-8 8-Channel Microphone Preamp
This product has an estimated 3-5 day shipment processing time.
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 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 universal power supply
- Grayhill mil-spec gold switching
- Welded 16 gauge steel rack chassis
- Lovingly hand-crafted in Northern California
Options
- Ribbon optimized DC coupled input - $100/channel
- Extra 10dB gain - no charge
- DPA 130V input - $300/channel
- Dante or MADI digital output expander PCB
- Analog output expander PCB (3x outputs per channel)
Specifications
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Minimum Gain |
8.5 dB |
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Maximum Gain (1.5 dB per step, 36 steps) |
60 dB (up to 70 dB on request) |
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Frequency Response (+0 / -3 dB) |
sub 8 Hz to beyond 300 kHz (sub 3 Hz by request) |
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Noise (60 dB Gain, 10 Hz - 30 kHz, Inputs common) |
-133 dB EIN |
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Total Harmonic Distortion + Noise (35 dB Gain, 10 Hz - 20 kHz bandwidth, +27 dBu Out) |
< .001%, Typ. < .0005% (< 5 ppm) |
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Intermodulation Distortion (50 Hz & 7 kHz) 35 dB Gain, +27 dBu Out |
< .0009% |
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Phase Response (35 dB Gain, 50 Hz - 20 kHz bandwidth, +27 dBu Out) |
< 2 degrees deviation |
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Common Mode Rejection Ratio (35 dB Gain, 10 Hz - 20 kHz bandwidth, 100 mV C.M.) |
> 65 dB, Typ > 85 dB |
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Slew Rate (35 dB Gain, +27 dBu Out) |
> 25 Volts per microsecond |
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Maximum Input Level (20 Hz - 40 kHz) |
+23 dBu (no attenuator pads required) |
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Maximum Output Level (20 Hz - 40 kHz) |
+32 dBu |
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Phantom Input Impedance (1 kHz) |
6,750 ohms |
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Output Impedance |
24.3 Ohms (x2) |
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DPA (B&K) Mic Powering |
+130 V dc max, (non-phantom) |
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Phantom Powering |
+48 V dc, +/- 4 V dc |
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Power Consumption |
45 watts maximum |
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Power Requirements |
100V to 240V, 50/60 Hz |
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Dimensions/Shipping Weight |
19” W x 3.5” H x 12.5” D, 23 lbs. |
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DANTE |
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Physical Layer |
Ethernet |
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Connectors |
Dual RJ-45 (Primary / Secondary) |
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Cable Quality |
CAT-5e or better |
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Transmission Speed |
1Gbps |
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Supported Sample Rates |
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
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Minimum Dante Latency |
250 µS |
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Supported Modes |
Redundant / Switched |
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AES67 Support |
Planned (Dante embedded) |
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Certifications |
FCC CFR 47 Part 15 Subpart B, Class A EN 55032:2015, EN 55035:2017, EN 61000-3-2:2014, EN 61000-3-3:2013 |
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Compliance |
RoHS 2011/65/EU (and delegated directive (EU) 2015/863) |