Product Overview
For a wide variety of your dynamics processing needs, dbx packs a tube preamp, parametric EQ, and a compressor/limiter all into its 676 channel strip that's perfect for your studio needs.
With the pristine gain running on 250 volts, this processor's class-A tube preamp allows your signal to be as crystal clear or as dirty as your sound requires. Next is the 3-band equalizer with sweepable mids, allowing you to shape your tone for adequate clarity and punch. It also incorporates the iconic compressor/limiter design from dbx 162SL.
With its military-grade build and vintage-inspired controls, and VU metering, the dbx 676 provides nothing short of professional quality and longevity.
Features
- Class-A Vacuum Tube Preamp with High Voltage Gain
- High-Visibility Vintage VU Meter
- Compressor designed from the dbx162SL
- 3-Band Parametric EQ
- 1/4” and XLR Inputs and Outputs
- Front Panel Instrument Input
- Side Chain Insert
Specifications
- Mic Preamp Connector: Female XLR (pin 2 hot), electronically balanced/unbalanced
- Input Impedance: 1.9 kΩ
- CMRR: >85 dB from 20 Hz to 3 kHz, >70 dB from 3 to 20 kHz
- Instrument Input Connector: 1/4" TS jack, unbalanced
- Input Impedance: 500 kΩ
- Max Input: +21 dBu unbalanced
- Preamp Insert Connector: 1/4" TRS jack, RF filtered
- Line Outputs (Preamp & Compressor/Limiter) Connector: Male XLR and 1/4" TRS (pin 2 and tip hot), servo-balanced/unbalanced
- Output Impedance: Balanced 30 Ω, unbalanced 15 Ω
- Max Output: >+21 dBm (into a 600 Ω load)
- Compressor Sidechain Insert Connector: 1/4" TRS, RF filtered
- Insert Type: Unbalanced, ring = output, tip = input
- Insert Impedance: 1 kΩ (output), 50 kΩ (input)
- Vacuum Tube Type: 12AU7A / ECC82
- Grid Power Supply: +250V DC
- Heater Power Supply: +12V DC
- Frequency Response (mic input): 20 Hz to 50 kHz, +0/-1 dB, 40 dB gain
- Frequency Response (instrument input): 30 Hz to 70 kHz, +0/-1 dB, unity gain
- THD+N (mic in to line out): 0.25% typical at 0 dBu out, 1 kHz, unity gain
- THD+N (instrument in to line out): 0.2% typical at 0 dBu out, 1 kHz, unity gain
- Equivalent Noise Level: typically >-123 dBu with at 150 Ω source load, 22 Hz to 22 kHz
- Noise Floor (mic insert to comp output): < -93 dBu, unity gain, EQ flat and no gain reduction
- Preamp Function Switches/Controls: Instrument Input select, 20 dB pad, polarity invert, 80 Hz low cut, gain control range, post tube attenuation, peak indicator
- Equalizer: 3-band
- Low: 100 Hz, low-pass shelving filter
- Mid: Sweepable from 100 Hz to 8 kHz
- High: 10 kHz, high-pass shelving filter
- Function Switch: Narrow: Selects the "Q" of the mid frequency EQ.
- Gain (all bands): Sweepable from -15 to +15 dB
- Compressor Info:
- Threshold Range: -40 dBu to +20 dBu
- Threshold Characteristic: Selectable OverEasy or Hard Knee
- Ratio: Variable 1:1 to infinity:1, 60 dB maximum compression
- Attack/Release Modes: Selectable manual or auto
- Manual Attack Time: Scalable program-dependent; typically 400 dB/ms to 1 dB/ms
- Manual Release Time: Scalable program-dependent; typically 4000 dB/ms to 10 db/ms
- Auto Attack Time: Program-dependent; typically 15 ms for 10 dB, 5 ms for 20 dB, 3 ms for 30 dB
- Auto Release Time: Program-dependent; typically 120 dB/s
- Output Level Control Range: -20 dB to +20 dB
- Peak Indicator: Illuminates RED when within 3 dB of clpping
- Limiter Info:
- Type: dbx PeakPlus
- Threshold Range: -4 dBu to +22 dBu (off)
- Ratio: infinity:1
- Attack and Release: Program-dependent
- Power Supply: Universal switch-mode
- Dimensions (H x W x D): 3.5" x 19" x 8"
- Weight: 8.1 lbs. (3.7 kg)
