Essential Information About the "dbx 286S" Mic Preamp
- True channel strip: studio-quality mic preamp + 4 built-in processors (compressor, de-esser, enhancer, expander/gate) that can be combined or used independently.
- Recognized dbx signature with OverEasy compression for stable and natural vocals, ideal for studio, live, and broadcast.
- Carefully designed mic input with 48 V phantom power and 80 Hz high-pass filter to eliminate hum and handling noise.
- Simple integration: insert jack, comprehensive level meters, and detented potentiometers for reproducible settings.
A Modernized Successor to the 286A
Direct successor to the very popular 286A, the dbx 286S features a redesigned front panel and updated electronics based on recent components. This evolution preserves the dbx sonic character-clear, punchy, and reliable-while offering more readable ergonomics and optimized performance for today's studios.
Designed for Voice, Podcasting, and Direct Input
Whether you're recording voice-over, podcast, streaming, or vocals in a booth, the 286S stands as an efficient analog gateway before your audio interface. Its integrated processing chain reduces reliance on plugins, lowers perceived headphone latency, and secures professional levels both live and on-air.
Precise Processing for a Mix-Ready Result
Complete Chain, Easy to Control
Each section can be engaged separately to apply only what's necessary: a touch of compression to stabilize the voice, a targeted de-esser to tame sibilance, the enhancer to add brightness and body, and the expander/gate to clean up silences. The insert allows adding an external processor if needed.
Controlled Dynamics, dbx Style
The OverEasy compressor ensures smooth transitions that keep the signal upfront without artifacts. The expander/gate, with dedicated threshold and ratio, ranges from subtle noise reduction to sharp gating of overly noisy takes.
Sculpting Timbre, Enhancing Intelligibility
The variable-frequency de-esser precisely targets problematic areas, while the HF/LF enhancer adds detail to highs and density to lows. The 80 Hz high-pass filter maintains a clean low end by removing unwanted vibrations.
Technical Specifications
Processing and General Features
- Studio-quality mic preamp with integrated processing
- Classic dbx compression, easy to implement (OverEasy mode)
- Variable-frequency de-esser for sibilance and high-frequency distortion reduction
- Enhancer to increase detail and definition in bass and treble
- Program-adaptive expander/gate
- 80 Hz high-pass filter
- Insert jack for external processing
- Comprehensive level display and status LEDs
- 48 V phantom power
- Precision detented control potentiometers
Compressor
- Threshold: -40 dB to +20 dBu, OverEasy
- Maximum compression: 30 dB
- Distortion: < 0.05% (20 Hz-20 kHz), 15 dB G/R; +10 dBu
De-Esser
- Frequency range: 800 Hz to 10 kHz, 12 dB/octave slope
- Release time: program-dependent, 1 ms/dB
Enhancer
- HF: signal-dependent shelving equalizer; approximately 15 dB max high-frequency gain
- LF: bell EQ gain/80 Hz and cut/250 Hz, ratio 2:1
Expander/Gate
- Threshold: up to +15 dBu
- Ratio: adjustable from 1.5:1 to 10:1
- Maximum attenuation: > 50 dB
- Attack time: signal-dependent, about 2 ms
- Release time: signal-dependent, about 10 ms/dB
Inputs
- Mic input gain: 0 to +60 dB
- Line input gain: -15 to +45 dB
- Max mic input level: 0.25 Vrms, gain -30 dB
- Max line input level: > +21 dB
Outputs
- Max output level: +21 dBu / 600 Ohms
Audio Performance
- Frequency response: 20 Hz-20 kHz, +0.5/-0.5 dB
- Distortion + Noise: < 0.08% (20 Hz-20 kHz), processing bypassed
- Signal-to-noise ratio: < -85 dBu unweighted
Format
- Height: 1U
- Dimensions: 45 x 146 x 485 mm
- Weight: 2.05 kg