Millennia Media HV-3D/4 4 Channel Microphone Pre Amp

SKU:

HV3d/4

Brand:

Millennia Media

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Product Description

Four channels of HV-3 mic preamp in one 2U height rack chassis.

HV-3: Includes +48V phantom powering, optional +130 Volt B&K (DPA) mic powering, LED indicators, gain of 5 dB per step in 12 steps. Optional high-res (HR) gain switch available with 1.5 dB per step in 36 steps. DC Input Option available. Accepts 115V/230 VAC worldwide mains powering.

Fully shielded internal power supply. Identical spec and performance as HV-3 except high resolution (HR) gain switches are standard. Optional DPA (BK) +130 Volt mic inputs. Gloss black 3/8¡± faceplate. Accepts 100 - 240 VAC mains powering. Ground lift. DC Input Option available. Can be upgraded to HV-3D eight channel mic preamp

Product Highlights

High speed transformerless design
23 db input & 32 db output headroom (no pads required)
Entirely balanced audio path
Optional b&k (DPA) +130 volt inputs on all channels
Optional dc-coupled "ribbon inputs" on all channels
Laser trimmed fet-based output
Thd+n less typically than 5 ppm (.0005%)
Matched discrete transistor front-end
High-resolution gain switches standard (36 steps)
Interchannel gain matched to .04 db
Four ch. Unit factory upgradable to eight ch.
Fully shielded internal toroid power supply
Unsurpassed ambience retrieval
Effortless, lifelike musical performance at all dynamic levels

Available Options

B&K (DPA) +130V mic inputs
DC Optimized Mic Inputs
Channel Summing

Product Specifications

MINIMUM GAIN	8.5 dB
MAXIMUM GAIN (1.5 dB per step, 36 steps)	60.5 dB (up to 78 dB on rqst)
FREQUENCY RESPONSE +0 / -3 dB	sub 4 Hz to beyond 300 kHz
FREQUENCY RESPONSE, STEREO DEVIATION	< .04 dB
NOISE @ 60 dB Gain, 10 Hz - 30 kHz, Inputs common	-133 dB EIN
NOISE @ 60 dB Gain, 10 Hz - 30 kHz, 50 Ohm Source	-130 dB EIN
NOISE @ 60 dB Gain, 10 Hz - 30 kHz, 150 Ohm Source	-128 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 bandwdth, +27 dBu Out	< 2 degrees deviation
PHASE RESPONSE, STEREO DEVIATION 35 dB Gain, 20 Hz - 40 kHz bandwidth, +27 dBu Out	< 1/2 degree 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*
MAXIMUM OUTPUT LEVEL 20 Hz - 40 kHz	+32 dBu
INTERCHANNEL CROSSTALK 35 dB Gain, 1 kHz, +27 dBu All Outputs	Better than -120 dB (> 20 Bits)
PHANTOM INPUT IMPEDANCE @ 20 Hz	6,700 Ohms
PHANTOM INPUT IMPEDANCE @ 20 kHz	6,800 Ohms
OUTPUT IMPEDANCE	24.3 ohms (x2)
B&K (DPA) MIC POWERING	+130 VDC, max, direct (non-phantom) powered
PHANTOM POWERING	+48 VDC, +/- 2 VDC
POWER CONSUMPTION, MAXIMUM	45 Watts, Maximum
POWER REQUIREMENTS	100 to 240 VAC, 50/60 Hz
DIMENSIONS	19" W x 12" D x 3.5" H

* Approximately equivalent to the output of a B&K 4012 microphone in a 145 dB SPL soundfield.
- Unless stated, all measurements are balanced into 100k ohm load on a calibrated Audio Precision System One.