dbx - 676 (MIc-Pre/Tube Channel Strip)

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.
• OUT: Q = 0.9
• IN: Q = 2.9
• 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)