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DBX

dbx 386 Dual Vacuum Tube Preamp with Digital Out

SKU: DBX386 MFR: 386
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$649.95 List Price

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About this item

The dbx 386 Dual Vacuum Tube Preamp with Digital Out is a dual channel tube microphone preamp that comes with the additional capabilities of digital output. With the included digital outputs, the unit is the perfect companion for recording and tracking vocals, or any applications needing microphones, both in the analog and digital domain.

It combines the warmth of a vacuum tube, with the proprietary dbx Type IV A/D conversion system. In addition to the above features, the single rack space unit contains such standard offerings as +48V phantom power, a phase invert switch and low cut filtering. The digital outputs capabilities are supported in both AES/EBU and S/PDIF formats, as well as word clock I/O as standard features.

To provide convenience in the studio, the high impedance 1/4" instrument input, as well as the mic/line switch and 20dB pad of the 386 are located on the front panel. The LED meters give clear and concise information about the state of signal processing, while the rear panel houses the mic and line inputs and outputs, word clock sync input and output and digital outputs. Finally, the unit sports selectable sampling rates of 44.1, 48, 88.2 and 96 kHz, selectable dithering and noise shaping and separate analog and digital output controls.

What's Included With This Item

  • dbx 386 Dual Vacuum Tube Preamp
  • Power Cable
  • dbx 2 Years Limited Warranty

Key Features

  • Two channel tube microphone preamplifier
  • Selectable 96kHz, 88.2kHz, 48kHz, or 44.1kHz sampling rate
  • 24, 20 and 16-bit word lengths
  • 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

Technical Specs

Mic Input: Connector Female XLR Pin 2 Hot
Mic Input: Type Electronically balanced/unbalanced
Mic Input: Impedance 330 ohm
Mic Input: Max Input Level -9 dBu or +11 dBu with 20 dB pad engaged
Mic Input: CMRR >40dB, Typically 55dB
Mic Input: Equivalent Input Noise Typically 120 dBu with a 150 ohm, source load 20 Hz to 20kHz Bu
Line Input: Connector TRS 1/4" Jack
Line Input: Type Electronically balanced/unbalanced
Line Input: Impedance 20k ohm unbalanced, 40k ohm balanced
Line Input: Max Input Level +21dBu balanced or unbalanced
Line Input: CMRR >40dB, Typically 55dB
Line Input: Gain (Drive Control) -15dB to +15dB
Instrument Input: Connector TS 1/4" Jack
Instrument Input: Type Unbalanced
Instrument Input: Impedance 470k ohm
100 ohm, send -20 ohm return
Instrument Input: Maximum Output Level >+21 dBu unbalanced
Instrument Input: Insert Connector TRS 1/4"
Analog Outputs: Connector Male XLR Pin 2 Hot and TRS 1/4"
Analog Outputs: Type Servo-balanced/unbalanced
Analog Outputs: Impedance Balanced 120 ohm, unbalanced 60 ohm
Analog Outputs: Maximum Output Level >+21 dBu, >+20 dBm (into a 600 ohm load)
Digital Outputs: Connector XLR for AES/EBU
RCA for S/PDIF
Digital Outputs: Impedance 110 ohm for AES/EBU
75 ohm for S/PDIF
Word Sync Input/Output: Connectors BNC
Word Sync Input/Output: Input Impedance 75 ohm terminated by internal jumper
Word Sync Input/Out: Input 96, 88.2, 48, or 44.1kHz word clock
Word Sync Input/Out: Output 96, 88.2, 48, or 44.1kHz word clock
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
System Performance: 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: Type dbx Type IV A/D Conversion System
Analog to Digital: Sample Rate 96, 88.2, 48, or 44.1kHz selectable
Analog to Digital: Wordlength 24, 20, or 16 bit selectable
Analog to Digital: Dither Type TPDF, SNR2, or none
Analog to Digital: Noise Shape Shape 1, Shape 2, or none
Analog to Digital: Output Format S/PDIF or AES/EBU
Analog to Digital: Dynamic Range 107dB typical, A-weighted, 22kHz bandwidth
Operating Voltage DO: 120VAC 60Hz, 100VAC 50/60Hz
EU: 230VAC 50/60 Hz
Power consumption 35W
Dimensions (H x D x W) 1.75" x 7.75" x 19" (4.5cm x 19.7cm x 48.5cm)
Weight 6.89 lbs (3.17kg)
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