dbx 676

Tube Channel Strip with Class A, High-voltage Mic/Line Preamp, Compressor/Limiter, 3-band Parametric EQ, Front-panel Instrument Input, Side-chain Insert, and VU Meter
dbx 676 image 1
dbx 676 image 1
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dbx 676
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You'll Want This Tube Channel Strip!

The dbx 676 tube channel strip gives you classic warmth and punch, plus everything you need to sculpt your tracks to perfection - right from the get-go! Over 40 years of dbx dynamics processing is packed into this 2U professional rackmount chassis. It all starts with an immaculate high-voltage, Class A tube preamp section running on 250 volts, delivering signal that can be as pristine or filthy as you desire. From there, the 676 gives you the compressor/limiter design from the acclaimed dbx 162SL, as well as a 3-band parametric equalizer with swept mids. At Sweetwater, we're mightily impressed with the dbx 676. We think you will be, too!

dbx 676 Tube Mic Preamp Channel Strip at a Glance:
  • From pristine clean to delightfully dirty
  • Exacting control over dynamics and tonal balance
  • Pro features, easy to use
From pristine clean to delightfully dirty

A vacuum tube-based channel strip that offers a bevy of flexible sound-tailoring options, the dbx 676 delivers stunning sound for recording and live sound applications. When you first fire it up, that glowing tube behind its front-panel grille is your first clue to what's in store: the sonic glories of a world-class vintage/modern design. dbx designed the 676 for rich, pristine sonics and tube warmth, and included a flexible gain structure that lets you add any amount of personality, punch, and edge to vocals and instruments. The 676 rocks a high-gain, Class A tube mic preamplifier section based around a 12AU7 vacuum tube that you can tweak for your desired degree of harmonic character, from pristine clean to delightfully dirty.

Exacting control over dynamics and tonal balance

For exacting control over dynamics and tonal balance, the 676 includes the compressor/limiter design from the acclaimed dbx 162SL, plus a 3-band parametric EQ. Featuring both soft- and hard-knee compression, proprietary AutoVelocity manual and OverEasy modes, and a PeakStop limiting algorithm - plus threshold, attack, gain and release, and auto attack and release controls, the compressor/limiter gives you amazingly flexible control over your dynamics. The 676's 3-band parametric EQ lets you adjust boost/cut and bandwidth at frequencies that were selected for maximum musicality.

Pro features, easy to use

The dbx 676 gives you professional connectivity, with 1/4-inch and XLR inputs and outputs, a front-panel instrument input, and a side-chain insert. The 676 lets you precisely tailor your input and output levels - which you can keep tabs on via a large, old-school multi-function VU meter. A front-panel tri-color indicator lets you know the status of the 676's optional digital output card. Although extensive in its capabilities, the dbx 676's vintage-style controls and VU metering make it delightfully quick and ease to use. And its military-grade build will give you rock-solid service for many, many years!

dbx 676 Tube Mic Preamp Channel Strip Features:
  • Class-A vacuum tube preamp with high-voltage gain
  • Flexible gain structure lets you add harmonic character to taste
  • Compressor/limiter design from the acclaimed dbx 162SL
  • 3-band parametric EQ
  • 1/4" and XLR inputs and outputs
  • Front-panel instrument input
  • Side-chain insert
  • High-visibility vintage VU meter
  • Optional digital output card
Juice your signal chain with the amazing dbx 676!

Additional Media

Studio Preamp Buying Guide
dbx 676 Tube Channel Strip Overview by Sweetwater Sound
DBX 676 Tube Channel Strip - Sweetwater at Winter NAMM 2015

Tech Specs

Preamp Type Tube
Number of Channels 1
Frequency Response 20Hz-50kHz (Mic), 30Kz-70kHz (Instrument)
Phantom Power Yes
EQ Yes (3-band Parametric)
Compressor Yes
Analog Inputs 1 x XLR, 1 x 1/4" (Instrument), 1 x 1/4" (Insert) , 1 x 1/4" (Sidechain Insert)
Analog Outputs 2 x XLR, 2 x 1/4"
Rack Spaces 2U
Height 3.5"
Depth 8"
Width 19"
Weight 8.1 lbs.
Manufacturer Part Number DBX676

Customer Reviews

Based on 6 reviews
Write your review

This is Awesome

I was somewhat skeptical at the beginning since I've never had any dbx gear in my studio and since i do a lot of voiceovers I needed a channel strip for my studio b. I took a chance, and I have no regrets. As soon as I powered it up I was blown away by the warmth and quality this baby produced. It's worth every penny. I strongly recommend it.


Warmth,Quality,Resolution,Compression,Colour Is Perfect.I Realy Love 676...

Not a Parametric EQ !!!

Please get the product description right folks!! This does not have a parametric EQ!! Each band is independently sweepable with a preset corner freq, and a switchable narrow / wide bandwidth. Thanks for changing the product description to reflect this!!

So Warm...

I bought two of these units, along with a couple of Neumann TLM 107s, and the combination of the two products produces a sound that is totally amazing, warm, and clear. As i was looking to get a "vintage" jazz sound I couldn't have asked for more. The Pre's are clear and warm, producing a warm and upfront sound that works perfectly for my application - jazz soloist - vocals and guitar. The EQ and Compressor sections of this channel strip are perfect for dialing in a very transparent and lovely tone. I would have given this product 5 stars but I think Harmon could have used better tubes as they can be a bit "hissy" when pushed. I've since ordered two new tubes to replace the existing tubes but, overall, I'm very happy I made this purchase and love the results I've been getting. Thanks, too, to my amazing sales rep at Sweetwater (Charlie Davis) for taking great care of me on all my purchases.

Dbx 676

I have this guy...it is totaly good.but not like older brothers like 576(musicality of recording & tube color).quality is awsome.and comprssor works good(better than avalon 737sp) Anyway i think it is a Class A unit.but dbx please think about your great past.
See also: dbx, dbx Compressors / Limiters, dbx Channel Strips, dbx Preamps