Specifications:
Mic input: balanced, pin 2 hot
Impedance: 1.75kΩ
Max level: 0.2Vrms
Gain adjustment range: +10dB to +60dB
Phantom power: +48VDC

Line input: balanced TRS, tip hot
Impedance: 30kΩ unbal, 60kΩ bal
Max level: >+21dBu
Gain adjustment range: -20dB to +30dB

Insert: ¼" TRS jack: tip=send, ring=return
Send impedance: 100Ω
Max send level: >+21dBu
Noise: <-84dBu, unweighted
Distortion: <0.01% THD, +10dBu
Return impedance: >5kΩ
Max return level: >+21dBu

Line output: balanced TRS
Impedance: 100Ω unbal, 200Ω bal
Max level: >+21dBu
Gain adjustment range: -30dB to +10dB
Noise: <-80dBu (typically -85dBu)
Distortion: ,0.08% THD, +10dBu

Compressor threshold: -40dBu to +20dBu
Compression ratio: >4:1
Maximum compression: 30dB
Distortion: Typically <0.05% THD

De-esser: Wideband Gain Reduction
Frequency range: 800 - 10kHz high pass, 12dB/octave
Release time: program-dependent, approx. 1ms/dB

Enhancer: HF: program controlled shelving EQ, approx 15dB
LF: Bell shaped boost @ 80Hz or 250Hz, ratio approx. 2:1

Expander/Gate: Off to +15dBu
Threshold range: adjustable 1.5:1 to 10:1
Expansion ratio: >50dB

Dynamic range: typically 105dB
Power requirements: 100/120VAC (USA) or 230VAC (Europe)
Power consumption: 15W
Dimensions: 485 x 175 x 45mm
Weight: 2.13kg

dbx 286a 

single channel studio quality mic pre-amp with compressor, expander gate, detail enhancer & de-esser.
Classic dbx compression  for natural sounding, subtle program dependant dynamic control.

Key Features:

• Expander Gate with threshold and ratio controls
• Compression: Variable Drive (threshold) and Density (compression ratio) controls
• Patented HF and LF Detail enhancer.
• Input level meter, Gain reduction LED meter, output clip indicator
• Switchable 48v phantom power, high pass filter, bypass
• De-esser with variable threshold
• Connections: balanced TRS jack inputs. TRS jack outputs. TRS jack sidechain send/returns
• Suitable for vocal compression, instruments, line driving, system control and peak limiting

Not sure how to use a compressor? Visit Dr. Know's Audio Clinic for a quick guide.

Full dbx price list