The dbx 676 Microphone Channel Strip is a professional tube channel strip that provides classic warmth and punch with flexible dynamics control. It is designed for audio engineers who need a versatile, all-in-one hardware solution to sculpt vocals, guitars, and other instruments.
The 676 represents all of the best of dbx’s more than 40 years of dynamics processing. It offers a pristine high-voltage, Class-A tube preamp section that runs on 250 volts, so your signal can be as crystal clean or dirty as you need it to be. The 676 also incorporates the compressor/limiter design from the highly-sought after dbx162SL, as well as a 3-band parametric EQ with sweepable mids. The 676 provides audio professionals with the perfect channel strip for recording and live applications alike with its military-grade build, vintage-inspired controls and VU metering.
The 676 is packed with professional features, starting with a powerful compressor/limiter based on the acclaimed dbx 162SL. This compressor offers both hard and soft-knee (OverEasy) modes, with manual or automatic control over attack and release times, as well as dbx's PeakPlus limiting to prevent clipping. The unit also includes a 3-band semi-parametric EQ with sweepable mids, allowing for precise tonal shaping. It provides comprehensive connectivity, including XLR and ¼-inch inputs and outputs, a front-panel instrument input, and a side-chain insert for advanced processing like de-essing. Additionally, separate outputs for the preamp and compressor sections offer greater flexibility for parallel processing.
dbx 676 Microphone Channel Strip Features
- Class-A high-voltage vacuum tube preamp: Delivers a warm, rich tone that can be clean or heavily saturated, with a 250-volt rail for maximum headroom.
- dbx 162SL-style compressor/limiter: Incorporates the VCA compressor design from the acclaimed dbx 162SL, providing smooth dynamics control with variable ratio and OverEasy (soft-knee) or Hard Knee compression.
- 3-band semi-parametric EQ: Includes sweepable mid-range frequencies, with high and low shelving bands at 10 kHz and 100 Hz respectively, for musical tone shaping.
- High-visibility vintage VU meter: A large, easy-to-read, illuminated meter can display input level, output level, or gain reduction.
- Front-panel instrument input: A 1/4-inch jack on the front allows direct connection of instruments like guitar or bass.
- Sidechain insert: Provides a 1/4-inch jack for integrating external signal processors with the compressor, enabling frequency-dependent compression (de-essing) and other effects.
- PeakPlus limiter: A separate limiting algorithm catches sudden, loud peaks to prevent digital clipping, allowing for independent control from the main compressor.
- Phantom power, pad, and polarity invert: Includes essential functions like +48V for condenser microphones, a -20 dB pad for high-level sources, and a polarity (phase) invert switch.
- Flexible gain control: The preamp offers both a pre-tube gain control and a post-tube attenuation control, giving you command over the amount of tube saturation.
- Multiple I/O: The unit provides professional connectivity with balanced XLR and 1/4-inch inputs and outputs for flexible signal routing.
dbx 676 Microphone Channel Strip Specifications
- Mic Preamp Input Impedance: 1.9 kΩ
- Instrument Input Impedance: 500 k Ω
- Frequency Response (Mic Input): 20 Hz to 50 kHz, +0/-1dB, 40 dB gain
- Frequency Response (Instrument Input): 30 Hz to 70 kHz, +0/-1dB, unity gain
- THD + Noise (Mic In to Line Out): 0.25% typical at 0 dBu out, 1 kHz, 40 dB gain
- THD + Noise (Instrument In to Line Out): 0.2% typical at 0 dBu out, 1kHz, unity gain
- Equivalent Noise Level: Typically > -123 dBu with a 150 Ω source load, 22 Hz to 22 kHz
- Compressor Threshold Range: -40 dBu to +20 dBu
- Limiter Threshold Range: -4 dBu to + 22 dBu (off)
- Operating Voltage: 100 – 240 VAC, 50/60 Hz
- Power Requirements: 20 Watts
- Fuse: T2.5AL 250V
- Dimensions: 3.5”H X 19”W X 8”D
- Weight: 8.1 lbs (3.7 kg)
dbx 676 Microphone Channel Strip Includes
- dbx 676 Channel Strip Unit
- Power Cable
- Manufacturer Warranty