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386

DBX 386

Price: $529.95
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Dual Vacuum Tube Preamp with Digital Out

The Silver Series 386 dual channel tube mic preamp puts the best of both worlds into one affordable package by combining the warmth of the irreplaceable vacuum tube with the proprietary dbx Type IV conversion system. The 386 boasts many of the same features as other products in the Silver Series, such as +48V phantom power, a phase invert switch, and low cut filtering; but also includes digital outputs in both AES/EBU, and S/PDIF formats.

The high impedance, 1/4" instrument input located on the front panel, as well as the mic/line switch, and 20 dB pad show our dedication to providing convenience in the studio. The 12 segment LED meters provide a visual indication of analog or digital levels at a glance. The rear panel includes both mic and line inputs and outputs, word clock sync input and output, and digital outputs. Add selectable sampling rates of 44.1 kHz, 48 kHz, 88.2 kHz, or 96 kHz; selectable dithering and noise shaping; and separate analog and digital output controls to this already impressive list of features, and we think you’ll agree that the 386 lives up to the innovative dbx standards.

Features:
  • Two channel tube microphone preamplifier
  • Selectable 96kHz, 88.2kHz, 48kHz, or 44.1kHz sampling rate
  • 24, 20, and 16-bit wordlengths
  • Selectable dither and noise shaping
  • AES/EBU and S/PDIF digital outputs
  • Word clock sync input and output
  • Separate analog and digital output control
  • Type IV conversion system
  • 60dB of gain and +/- 15dB of output gain
  • Selectable mic/line switch
  • 48 volt phantom power
  • 20dB pad
  • 75Hz low cut filter
  • Phase reverse
  • Segment LED analog/digital
MICROPHONE INPUT
Connector: Female XLR Pin 2 Hot
Type: Electronically balanced/unbalanced
Impedance: 330Ω
Max Input Level: -9 dBu or +11 dBu with 20 dB pad engaged
CMRR: >40dB, Typically 55dB
Equivalent Input Noise: Typically 120 dBu with a 150Ω, source load 20 Hz to 20kHz Bu

LINE INPUT (REAR PANEL)
Connectors: TRS 1/4" Jack
Type: Electronically balanced/unbalanced
Impedance: 20kΩ unbalanced, 40kΩ balanced
Maximum Input Level: +21dBu balanced or unbalanced
CMRR: >40dB, Typically 55dB
Gain (Drive Control): -15dB to +15dB

INSTRUMENT INPUT (FRONT PANEL)
Connector: TS 1/4" Jack
Type: Unbalanced
Impedance: 470kΩ
Maximum Output Level: >+21 dBu unbalanced
Insert Connector: TRS 1/4"
Type: Unbalanced
Impedance: 100Ω, send -20Ω return

ANALOG OUTPUTS
Connector: Male XLR Pin 2 Hot and TRS 1/4"
Type: Servo-balanced/unbalanced
Impedance: Balanced 120Ω, unbalanced 60Ω
Maximum Output Level: >+21 dBu, >+20 dBm (into a 600Ω load)

DIGITAL OUTPUTS
Connector: XLR for AES/EBU, RCA for S/PDIF
Impedance: 110Ω for AES/EBU, 75Ω for S/PDIF

WORD SYNC INPUT/OUTPUT
Connectors: BNC
Input Impedance: 75Ω terminated by internal jumper
Input: 96, 88.2, 48, or 44.1kHz word clock
OUTPUT: 96, 88.2, 48, or 44.1kHz word clock

SYSTEM PERFORMANCE
DRIVE Control Range: +30dB to +60dB for Mic Input, -15dB to +15dB for Line and Instrument Inputs
LEVEL Control Range Analog and Digital): -15dB to +15dB
LINE: Selects between microphone and line inputs
Phantom Power: +48V
PAD: 20dB pad
PHASE: Reverses pins 2 and 3 of the microphone input XLR
LOW CUT: 75Hz, 12dB/octave high pass filter
Frequency Response: <10Hz to 75kHz
THD + Noise: 0.35% typical at +4dBu out, 1kHz, 40 dB gain
Interchannel Crosstalk: Typically –80dB, 20Hz to 20kHz

ANALOG TO DIGITAL CONVERSION
Type: dbx Type IV A/D Conversion System
Sample Rate: 96, 88.2, 48, or 44.1kHz selectable
Wordlength: 24, 20, or 16 bit selectable
Dither Type: TPDF, SNR2, or none
Noise Shape: Shape 1, Shape 2, or none
Output Format: S/PDIF or AES/EBU
Convertor Dynamic Range: 107dB typical, A-weighted, 22kHz bandwidth

POWER SUPPLY
Operating Voltage: DO: 120VAC 60Hz, 100VAC 50/60Hz, EU: 230VAC 50/60 Hz
Power consumption: 35W

PHYSICAL
Dimensions: 1.75'' x 7.75'' x 19'' (4.5cm x 19.7cm x 48.5cm)
Power consumption: 6.89 lbs (3.17kg)
Note: 0dBu = -16dFS, 0dBu-0.775Vms

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