Description

The Pedigree of Professional Audio. At dbx Professional Products we are proud to introduce the all new 676 Tube Mic Pre Channel Strip. The 676 represents all of the best of dbx’s more than 40 years of dynamics processing.

Features

Class-A Vacuum Tube Preamp with High Voltage Gain
High-Visibility Vintage VU Meter
Compressor designed from the dbx162SL
3-Band Semi-Parametric EQ
1/4” and XLR Inputs and Outputs
Front Panel Instrument Input
Side Chain Insert

Why We Like This

It combines microphone gain and several problem-solving processors in one signal path, helping vocals sound more polished before they reach the mixer or recorder.

FAQs

Q: What is the dbx 676 used for?
A: It is a tube microphone preamp channel strip designed for full-bodied microphone tone and dynamics control.

Q: Can the dbx 676 be used for live sound and recording?
A: Yes. Its processing is useful in live racks, studios, broadcast setups, and installed systems when the application matches its input and output format.

Q: Is the dbx 676 a digital or analog processor?
A: Refer to the technical specifications for the signal path and connection format; the 676 is designed as a dedicated hardware processor rather than a software plug-in.

Based in Chicago, IL, Gear Club Direct supports musicians, integrators, and creators every day with reliable gear and expert service.

Tech Specs

Brand:	dbx
CMRR:	>85 dB from 20 Hz to 3 kHz, >70 dB from 3 kHz to 20 kHz
Compressor Attack/Release Modes:	Selectable Manual or Auto
Compressor Auto Attack Time:	Program-dependent, typically 15 ms for 10 dB, 5 ms for 20 dB, 3 ms for 30 dB
Compressor Auto Release Time:	Program-dependent, typically 120 dB/sec
Compressor Manual Attack Time:	Scalable program-dependent; Typically 400 dB/msec to 1 dB/msec
Compressor Manual Release Time:	Scalable program-dependent; Typically 4000 dB/sec to 10 dB/sec
Compressor Output Level Control Range:	-20 dB to +20 dB
Compressor Peak Indicator:	Illuminates RED when the Compressor/Limiter is within 3 dB of clipping
Compressor Ratio:	Variable 1:1 to ∞:1; 60 dB maximum Compression
Compressor Sidechain Insert Connector:	Tip-Ring-Sleeve ¼”, RF filtered
Compressor Sidechain Insert Impedance:	1 kΩ (output), 50 kΩ (input)
Compressor Sidechain Insert Type:	Unbalanced, Ring = output, Tip = input
Compressor Threshold Characteristic:	Selectable OverEasy™ or Hard Knee
Compressor Threshold Range:	-40 dBu to +20 dBu
Country of Origin:	MX
Dimensions:	3.5”H X 19”W X 8”D (88.9mmH X 482.6mmW X 203.2mmD)
EQ Function Switches/Controls: Narrow:	Selects the “Q” of the MID Frequency EQ. “OUT” position Q = 0.9; “IN” position Q = 2.9
EQ Gain:	(All Bands) Sweepable from –15 to +15 dB
EQ High Frequency:	10 kHz, High-pass shelving filter
EQ Low Frequency:	100 Hz, Low-pass shelving filter
EQ Mid Frequency:	Sweepable from 100 Hz to 8 kHz
Equivalent Noise Level:	Typically > -123 dBu with a 150 Ω source load, 22 Hz to 22 kHz
Frequency Response (Instrument Input):	30 Hz to 70 kHz, +0/-1dB, unity gain
Frequency Response (Mic Input):	20 Hz to 50 kHz, +0/-1dB, 40 dB gain
Fuse:	T2.5AL 250V
Input Type:	(instrument) Unbalanced
Instrument Input Connector:	Tip-Sleeve ¼” Jack
Instrument Input Impedance:	500 k Ω
Limiter Attack and Release:	Program-dependent
Limiter Ratio:	∞:1
Limiter Threshold Range:	-4 dBu to + 22 dBu (off)
Limiter Type:	dbx PeakPlus™
Line Outputs (Preamp & Compressor/Limiter) Connector:	Male XLR and Tip-Ring-Sleeve ¼” (Pin 2 and Tip hot)
Line Outputs (Preamp & Compressor/Limiter) Impedance:	Balanced 30 Ω, unbalanced 15 Ω
Line Outputs (Preamp & Compressor/Limiter) Maximum Output Level:	> +21 dBm (into a 600 ohm load)
Line Outputs (Preamp & Compressor/Limiter) Type:	Servo-balanced/unbalanced
Link:	https://dbxpro.com/en-US/products/676
MAP:	1380
MSRP:	1720
Max Input:	(instrument) +21dBu unbalanced
Mic Preamp Connector:	Female XLR Pin 2 Hot; Electronically balanced/unbalanced
Mic Preamp Input Impedance:	1.9 kΩ
Model:	676
Noise Floor:	Mic Insert to Comp Output: <-93 dBu, unity gain, EQ flat and no gain reduction
Operating Voltage:	100 – 240 VAC, 50/60 Hz
Power Requirements:	20 Watts
Power Supply:	Universal switch-mode
Preamp Function Switches/Controls: +48V:	Sends +48 VDC through 6.81 kΩ resistors to pins 2 and 3 of the microphone input
Preamp Function Switches/Controls: 20dB Pad:	Attenuates the microphone input by 20 dB
Preamp Function Switches/Controls: 80 Hz Low Cut:	Enables an 80 Hz, 12 dB/octave high pass filter in the microphone and instrument signal path
Preamp Function Switches/Controls: Gain Control Range:	-∞ to +55 dB for Microphone Input; -∞ to +40 dB for Instrument Input
Preamp Function Switches/Controls: Instrument Input:	Selects between microphone XLR input and front panel ¼” instrument input
Preamp Function Switches/Controls: Peak Indicator:	Illuminates RED when the Preamp is within 3 dB of clipping
Preamp Function Switches/Controls: Polarity Invert:	Reverses pins 2 and 3 of the microphone input XLR
Preamp Function Switches/Controls: Post Tube Attenuation:	-∞ to 0 dB
Preamp Insert Connector:	Tip-Ring-Sleeve ¼”, RF filtered
Preamp Insert Type:	Unbalanced, Tip = send, Ring = return
Product Description Long:	Tube Mic Pre Channel Strip
Product Description Short:	Production Series
Product Type:	Tube Microphone Preamp Channel Strip
SKU:	DBX676FX
TAA Compliance:	Non Compliant
THD + Noise (Instrument In to Line Out):	0.2% typical at 0 dBu out, 1kHz, unity gain
THD + Noise (Mic In to LIne Out):	0.25% typical at 0 dBu out, 1 kHz, 40 dB gain
Turn-On Time:	Approximately 2 seconds
UPC:	691991000416
Vacuum Tube Grid Power Supply:	+250V DC
Vacuum Tube Heater Power Supply:	+12V DC
Vacuum Tube Type:	12AU7A / ECC82

Delivery & Returns

At Gear Club Direct, we want you to be happy with your purchase. We understand that there are times when once a product is received, it may not be what you needed or wanted after all. So, we will gladly accept your qualifying return within 15 days of the delivery date. After 15 days of the delivery date, all sales are final.

The Return Process
Customers are required to obtain a Pre-Authorization to return any product. To submit a request for a return, simply log in to your account and request a return and one of our sales representatives will contact you within 24-48 business hours. If you do not have an account with us, please open a help ticket, providing as much detail as possible and whether you are requesting a refund or an exchange. READ MORE