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- Call Us! Toll Free! 888-528-9703
- Local / International (+1) 919-682-5552
DBX 576 Vacuum Tube Preamp And Compressor - Used From dbx
"Silver Series" vacuum tube preamp and compressor from the late 90's. In Used, Excellent condition
$435.00
No Sales Tax in 45 States.
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Rating: 4.9
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What We Think
The dbx 576 is one of those channel strips that makes recording feel simple in the best possible way.
It’s not trying to be overly flashy or complicated—it’s built to give you a solid, polished front end with just enough tube character and control to make sources sit right from the start. And honestly, that’s a big part of the appeal.
The tube preamp brings a bit of warmth and thickness that works especially well on vocals and bass, helping things feel fuller without getting muddy. It’s not an exaggerated “vintage” sound—it’s more about adding a little depth and smoothness that makes tracks feel more finished before they ever hit the DAW.
The compressor section is classic dbx: easy to use, musical, and effective. You can dial in gentle leveling or a bit more control without fighting the unit, which makes it a great choice when you want to move quickly and stay focused on the performance instead of tweaking settings endlessly.
What really makes the 576 useful, though, is how complete it feels. Between the compression, de-essing, and enhancer sections, you can shape a source into something very mix-ready with minimal effort. It’s especially strong for home studios, voiceover work, podcasting, or any setup where you want an all-in-one recording chain that just works.
There’s also something refreshing about its straightforward workflow. You plug in, make a few adjustments, and you’re immediately in a usable place.
For anyone looking for an affordable, versatile channel strip with a touch of tube warmth and the familiar reliability of dbx dynamics, the 576 is a practical and musical recording tool that still holds up well today.
This unit has had the bulbs for the compressor meter replaced. There is now a slight difference in brightness between the two meters.
Manufacturer's Description from dbx
The dbx 576 is a single-channel tube channel strip that combines a microphone preamp, compressor, de-esser, and enhancer into a compact, studio-friendly front end designed for recording vocals, instruments, and voiceover applications.
At the heart of the 576 is a high-voltage 12AU7 tube preamp that delivers warm, harmonically rich gain with plenty of headroom. The preamp section features switchable phantom power, phase reverse, a high-pass filter, and both mic and instrument inputs, allowing it to accommodate a wide variety of sources—from microphones and direct instruments to line-level signals.
The built-in compressor is based on dbx’s well-known OverEasy® compression circuitry, offering smooth and musical dynamic control that can range from transparent leveling to more assertive compression. Simple controls make it easy to dial in usable results quickly, whether tracking vocals, bass, acoustic instruments, or spoken word.
In addition to compression, the 576 includes integrated de-essing and enhancer sections for further signal shaping. The de-esser helps control excessive sibilance and harsh high frequencies, while the enhancer can add clarity, presence, and low-frequency fullness to help sources sit more naturally in a mix.
A front-panel VU meter provides clear visual feedback for input, output, and gain reduction levels, and balanced XLR/TRS connectivity allows easy integration into both studio and live recording setups.
With its combination of tube warmth, practical dynamics control, and straightforward workflow, the dbx 576 offers an all-in-one recording solution that delivers polished, professional results while maintaining the musical character dbx channel strips are known for.
Specifications
MICROPHONE INPUTS
- Connectors: Female XLR Pin 2 hot
- Type: Electronically balanced/unbalanced
- Impedance: 1.70 k½
- Optimum Microphone Impedance: 150 - 200 ½
- Maximum Input Level: > +13 dBu, or +33 dBu with 20 dB pad engaged
- CMRR: > 115 dB at 60 Hz, > 110 dB at 1 kHz, > 75dB at 10 kHz
LINE INPUTS
- Connectors: Female XLR Pin 2 hot and TRS 1/4”
- Type: Electronically balanced/unbalanced
- Impedance: 20.1 k½ nominal, or 470 k½ with rear-panel INST switch engaged
- Maximum Input Level: > +30 dBu, or +22 dBu with rear-panel INST switch engaged
OUTPUTS
- Connectors: Male XLR Pin 2 hot and TRS 1/4”
- Type: Servo-balanced/unbalanced, RF filtered
- Impedance: Balanced 120½, unbalanced 60½
- Maximum Output Level: +21.5 dBu, balanced or unbalanced
INSERT
- Connectors: TRS 1/4”
- Type: Impedance balanced/unbalanced (SEND), electronically balanced/unbalanced
- Impedance: 100½ bal./50½ unbal. (SEND), 20k½
- Nominal Send Level: +4 dBu
- Nominal Return Level: +4 dBu
EQUALIZER
- LOW Frequency: 80 Hz, shelving filter
- HIGH Frequency: 12 kHz, shelving filter
- MID Frequency: Sweepable from 100 Hz to 8 kHz,
- bandwidth 1.5 octaves (WIDE) or 0.5 octaves (NARROW)
- Gain (all bands): Sweepable from -15 to +15 dB.
COMPRESSOR
- Treshold range: -40dBu to +20dBu
- Ratio: 1:1 to °:1
- Threshold Characteristic: Selectable OverEasy® or hard knee curves
- Attack/Release Characteristic: AutoDynamic™
- Attack/Release Modes: Selectable Manual or Auto
- Manual Attack Time: Scalable program-dependent. Typically 3dB/ms to .04dB/sec
- Manual Release Time: Scalable program-dependent. Typically 250dB/sec to 5dB/sec
- Auto Attack Time: Program-dependent. Typically 15ms for 10dB, 5ms for 20dB, and 3ms for 30dB
- Auto Release Time: Program-dependent. Typically 125dB/sec
- Output Gain: -15 to +15dB
PeakPlus LIMITER
- Type: Two-stage proprietary
- Threshold Range: +4 dBu to >+ 22 dBu (off)
- Ratio: °:1
- Stage 1 Attack and Release Time: Zero
- Stage 2 Attack Time: Program-dependent, typically < 5ms
- Stage 2 Release Time: Program-dependent, typically 22dB/sec
SYSTEM PERFORMANCE
- DRIVE Control Range: +10 dB to +60 dB
- LEVEL Control Range: -15 dB to +15 dB
- 0.5 dB Bandwidth: 15 Hz to > 90 kHz +0/-0.5 dB
- Frequency Response: <10 Hz to >200 kHz +0/-3.0 dB
- EIN: Typically -126 dBu, 150½ source impedance, unweighted, 20 Hz to 20 kHz
- measurement bandwidth
- THD + Noise: 0.04% typical at +0 dBu out, 1kHz, 33 dB gain 3.5% typical at +21 dBu out, 1kHz, 35 dB gain
- Deviation From Linear Phase: < 20 degrees, 20 Hz to 20 kHz.
- Interchannel Crosstalk: Typically -98 dB, 20 Hz to 20 kHz.
POWER SUPPLY
- Operating Voltage: 100V, 120V, or 220-240VAC 50/60 Hz.
- Power Consumption: 30 Watts maximum.
- Fuse: 100V: 315mA 250V Slow Blow 5mm X 20mm
- 120V: 315mA 250V Slow Blow 5mm X 20mm
- 220-240V: T160 mA 250V 5mm X 20mm
- Mains Connection: IEC 320 Receptacle
PHYSICAL
- Dimensions: 3.5" H X 19" W X 8" D
- Weight: 12 lbs (5.5 kg)
- Shipping Weight: 13 lbs (5.9 kg)
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