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| Entirely transformerless signal path, designed for the optimum musical &
ambient transparency available with vacuum tube circuitry. Includes continuous
gain adjustment from 15 to 50 dB, phantom power, phase reverse, ground lift.
Optional +130 Volt DPA (BK) mic powering. Gloss black 3/8Ħħ faceplate. 2U chassis
height. Accepts 100 VAC to 240 VAC worldwide mains powering.
Product Highlights
- Transformerless, fully class-a, 350 volt triode design
- >35 dbu output headroom
- Optional dpa +130v mic inputs
- Gold audio connectors, tube sockets, and relays
- Musically rich vintage vacuum tubes available
- Precision potentiometers, ultra-premium components.
- Effortless, lifelike musical performance at all dynamic levels
- Built for life, cosmetically appealing
Available Options
- B&K (DPA) +130V mic inputs
- 24-bit 192 kHz A/D "POW-R" converters (est delivery 2002)
- High resolution 36 position mil-spec gold gain controls (standard on the
HV-3B are 12 position mil-spec gold gain controls.)
- DC Input Option for ideal performance with dynamic microphones
Product Specifications
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MINIMUM GAIN |
14 dB |
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MAXIMUM GAIN |
50 dB |
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FREQUENCY RESPONSE +0 / -3 dB |
4 Hz to 130 kHz |
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FREQUENCY RESPONSE, STEREO DEVIATION |
< .10 dB |
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NOISE @ 50 dB Gain, 10 Hz - 30 kHz, 150 Ohm Source |
-116 dB EIN |
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TOTAL HARMONIC DISTORTION + NOISE, 30 dB Gain, 10 Hz - 20 kHz,
+0 dBu Out |
< .02% |
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PHASE RESPONSE 35 dB Gain, 20 Hz - 20 kHz, +26 dBu
Out |
<10 degrees deviation |
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PHASE RESPONSE, STEREO DEVIATION 35 dB Gain, 20 Hz - 40 kHz, +27
dBu Out |
<1 degree deviation |
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COMMON MODE REJECTION RATIO 30 dB Gain, 1 kHz, 100 mV
C.M. |
Better than 60 dB |
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SLEW RATE 30 dB Gain, +27 dBu Out |
>20 Volts per microsecond |
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MAXIMUM INPUT LEVEL +20 dB Gain, 20 Hz - 40 kHz (no pad
required) |
+20 dBu |
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MAXIMUM OUTPUT LEVEL 14 - 50 dB Gain Range, 20 Hz - 40 kHz, Min
10k Ohm Load |
> +35 dBu |
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STEREO (INTERCHANNEL) CROSSTALK
30 dB Gain, 1 kHz, +0 dBu
Both Outputs |
Better than -70 dB |
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INPUT IMPEDANCE, Phantom Input |
3,800 Ohms |
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INPUT IMPEDANCE, DPA (B&K) High Voltage Input |
9,000 Ohms |
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OUTPUT IMPEDANCE (transformerless vacuum tube) |
120 ohms |
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B&K POWERING |
+130 VDC, max, direct (non-phantom) powered |
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PHANTOM POWERING |
+48 VDC, +/- 2 VDC |
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POWER CONSUMPTION, MAXIMUM |
50 Watts |
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POWER REQUIREMENTS |
100/120 - 200/240 VAC selectable, 50/60 Hz |
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DIMENSIONS |
19" W x 12" D x 3.5" H | Unless stated, all measurements are balanced into 100k
ohm load on a calibrated Audio Precision System One. Click
here for more information |
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