dbx 386 Description
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.
dbx 386 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
dbx 386 Specifications
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