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IT’S TIME TO CHANGE THE CHANNEL! The standard of excellence for channel strip processors has just been raised once again. From the world leader in digital signal processing comes the new 376 Tube Channel Processor with digital output capabilities. dbx® Professional Products has been paving the way for audio excellence for more than 25 years, and with the creation of the 376, the drive continues. The 376 has taken the essential tools needed for channel strip processors and has greatly added to the feature list, making it an all inclusive toolbox that offers all of the effects required. With an effect menu list that includes such standard features as: a tube preamp section, 3-Band parametric EQ section, Compressor, De-Esser and digital outputs, the 376 is the perfect companion piece for recording and tracking vocals and mic’d applications in the analog and digital domain.

The 376 Tube Channel Strip w/Digital Output is the latest addition to the Silver Series family. The 376 puts the best of both worlds into one affordable package by combining the warmth of the vacuum tube, with the proprietary dbx Type IV® conversion system. The 376 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. In addition, the 376 also offers digital output capabilities in both AES/EBU, and S/PDIF formats as standard features. 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 LED meters provide a clear and concise visual of the signal processing at a glance. The rear panel includes both mic and line inputs and outputs, word clock sync input and output, insertion jack 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 376 lives up to the uncompromising standards of dbx Professional Products.

Additional information


Tube microphone pre-amp
200V tube plate voltage
Selectable mic/line switch
+48 Volt phantom power
3-Band Parametric EQ
Front panel instrument input
Drive meter LEDs
Threshold and De-Esser meters
8 segment analog or digital meter
Type IV® conversion system
Selectable sampling rate (96, 88.2, 48, 44.1kHz)
24, 20 and 16 bit wordlengths
AES/EBU and S/PDIF digital outputs
Selectable dither and noise-shaping algorithms
Word clock sync input and output


Mic Preamp Connector
Female XLR Pin 2 Hot; Electronically balanced/unbalanced

Mic Preamp Input Impedance

Mic Preamp max input level
-9 dBu or +11 dBu with 20 dB pad engaged

>40dB, Typically 55dB

Mic Preamp Equivalent Input Noise (EIN)
Typically -120 dBu with a 150Ω source load, 20Hz to 20kHz BW

Input Connectors
(instrument/line) 1/4" Jack

Input Type
(line) Electronically balanced/unbalanced; (instrument) Unbalanced

Max Input
(instrument/line) +21dBu balanced or unbalanced

Gain Adjustment Range
(drive control) Line/Instrument: -15dB to +15dB; Mic: +30dB to +60dB

Output Connectors
Male XLR Pin 2 Hot and TRS 1/4"

Output Type

Output Impedance
Balanced 120Ω, unbalanced 60Ω

Max Output
>+21 dBu, >+20 dBm (into a 600Ω load)

Insert Connector
TRS 1/4" Unbalanced

Insert Impedance
100Ω (SEND), 20kΩ (RETURN)

Digital Output Connector

Digital Output Impedance
110Ω for AES/EBU, 75Ω for S/PDIF

Word Sync I/O Connectors

Word Sync Input Impedance
75Ω terminated by internal jumper

Word Sync Input
96, 88.2, 48, or 44.1kHz word clock

Word Sync Output
96, 88.2, 48, or 44.1kHz word clock

Output Level
-20dB to +20dB

Line Switch
Selects between microphone and line inputs

Mic Preamp Phantom Power

Pad Switch
20dB pad

Phase Invert Switch
Reverses pins 2 and 3 of the microphone input XLR

Low cut Switch
75Hz, 12dB/octave high pass filter

Frequency Response
(analog) <10Hz to 75kHz

0.35% typical at +4dBu out, 1kHz, 40 dB gain

EQ Low Frequency
80 Hz, shelving filter

EQ High Frequency
12 kHz, shelving filter

EQ Mid Frequency
Sweepable from 100 Hz to 8 kHz, bandwidth 1.5 octaves

EQ Gain
(all bands) Sweepable from –15 to +15 dB

Compressor Threshold Range
-40 dBu to +20 dBu

Compressor Threshold Characteristic
Selectable OverEasy® or Hard Knee

Compressor Ratio
Variable; 1:1 to Infinity:1; 60 dB maximum Compression

Compressor Attack Time
Program-dependent; Typically 5 ms (SLOW disabled), 15 ms (SLOW enabled) for 15 dB Gain Reduction

Compressor Release Time
Program-dependent; Typically 50 dB/sec (SLOW disabled), 8 dB/sec (SLOW enabled)

De-esser Characteristic
Wideband gain reduction

De-esser Frequency Range
800 Hz to 10 kHz High Pass

De-esser Release Time
12 dB/octave program-dependent; approximately 1 ms/dB

A/D Converter
dbx® Type IV® A/D Conversion System

Sample Rate
96, 88.2, 48, or 44.1kHz selectable

24, 20, or 16 bit selectable

Dither Type
TPDF, SNR2, or none

Noise Shape
Shape 1, Shape 2, or none

Digital Output

Digital Output Dynamic Range
107dB typical, A-weighted, 22kHz bandwidth

Operating Voltage
DO: 120VAC 60Hz, 100VAC 50/60Hz; EU: 230VAC 50/60Hz

Power Consumption



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Product can be split into multiple boxes





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STUDIO Microphones DBX 376