8760 S. Sandy Pkwy.
Sandy, Utah 84070
Phone (801) 568-7660
Fax (801) 568-7662
IntÕl Fax (219) 462-4596
http://www.dbxpro.com
A Harman International Company
¥ Hand selected Premium 12AU7 vacuum
tubes in path
¥ Mic or line/instrument inputs on the preamp.
+4/-10 operation
¥ Drive control for a wide variety of great
tube effects
¥ PeakPlusª limiting control on both preamp
and compressor
¥ 3-Band EQ with sweepable mid-frequency,
wide / narrow Q and hardwire bypass on the
preamp
¥ Complete sidechain, OverEasy¨, Auto, and
Contour functions on the compressor
¥ Optional TYPE IVª Conversion System
outputs
¥ Separate 1/4" insert send and return on the
preamp
¥ Custom designed analog VU meters monitor
tube drive, insert level, gain reduction, or
output levels
SHAPE
DITHER
576
Vacuum Tube
Preamp
Compressor
DRIVE
dB
-10
+15
+25
(LINE 0dB)
+60
+30
LOW
dB
-15
0
+15
PHASE
LOW CUT
+48V
MID
dB
-15
0
+15
FREQUENCY
dB
100
200
1k
8k
4k
NARROW
HIGH
dB
-15
0
+15
LINE
INSERT
EQ
LEVEL
dB
-15
0
+15
PeakPlus
THRESHOLD
dB
0
+5
+10
Off
+20
+15
PAD
Off: None
Off: None
Green: TPDF
Green: Shape 1
Red: SNR
2
Red: Shape 2
TYPE IV
CONVERSION SYSTEM
INSERT
LEVEL
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
INSERT
LEVEL
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
LIMIT
PEAK
PREAMP
20
10
7
5
3
0
3
+
-
¨
DECIBELS
-15
-20
-10
-25
-5
-30
0
DRIVE
dB
-15
0
+15
THRESHOLD
dB
-40
-30
-20
0
0
-
-10
+
+10
+20
CONTOUR
BYPASS
SC ENABLE
RATIO
1:1
1.2:1
1.5:1
2:1
3:1
6:1
∞
:1
ATTACK
dB/mSec
3
1
.35
.04
.15
OverEasy
RELEASE
dB/Sec
250
125
12.5
50
5
UNLINK
AUTO
LEVEL
dB
-15
0
+15
PeakPlus
THRESHOLD
dB
0
+5
+10
Off
+20
+15
SC MON
LIMIT
PEAK
COMPRESSOR
20
10
7
5
3
0
3
+
-
¨
DECIBELS
-15
-20
-10
-25
-5
-30
0
GAIN
REDUCTION
METER SOURCE
DRIVE
LEVEL
OUTPUT
LEVEL
¨
For more than 25 years dbx has been a leader in the audio industry with its outstanding compressors,
mic preamps and signal processing technology. The ÒSilver SeriesÓ serves to strengthen that reputation.
With innovative, state-of-the-art engineering, the 576 Vacuum Tube Preamp/Compressor carries the
dbx heritage into the vacuum tube arena. The 576 is generously appointed with all the features one
could possibly want in a preamp/compresssor combinaton. Features that include custom designed
analog VU meters that monitor tube level, insert path (or gain reduction, in the case of the compressor)
or output levels. The compressor side also has full sidechain functionality, including sidechain monitor,
and our unique Contour function, which allows low frequency material to pass through the threshold
without triggering unmusical compression effects. Also included are the dbx OverEasy¨ threshold
characteristic, and Auto attack and release. The preamp fe48V Phantom Power, 20dB pad,
phase invert, and low cut filter. Add to this impressive list of standard features extras like a three band
EQ with sweepable mid and selectable mid Q (with EQ hardwire bypass) on the preamp, available
insert loop, the ability to send the preamp signal directly to the compressor, and the new patent-pending
PeakPlusª limiting topology, and youÕve got a winner.
The premium 12AU7 vacuum tubes are hand selected for ideal triode gain matching, distortion, micro-
phonics and drive characteristics. You get the best tube sound with the most versatility available today.
And with the optional dbx TYPE IVª Conversion System output, you can translate the essence of tube
processing directly to the digital world, without leaving the box. The digital output offers the ability to
communicate in either AES/EBU or S/PDIF at 16, 20, or 24 bit word lengths. In addition, TYPE IVª
offers the ability to select noise shape algorithms and dither types that best suit your music and your
medium. The 576 has all the rear panel versatility and connectivity that make it easy to setup and patch
into any system. Gold plated Neutrik¨ connectors for the audio ins and outs ensure solid connections
and pristine sound every time. Separate 1/4" connectors for the insert sends and returns, as well as
+4/-10 operating level switching make it a snap to use.
