Vintage King Marketplace Special Access
Your Resource for Exclusive
Pricing on the Best in Pro Audio
You are logged in and shopping with special discount pricing
Score Extra Savings
on Top Studio Gear!
Shop The Sale

dbx 540 Tube Mic Preamp with Optical Compressor

500 Series tube microphone pre with optical compressor, switchable phantom power, polarity invert, selectable -20dB pad, and dual-function meter
MFR# 540

Product No Longer Available

Need help finding a different option? We can help.

* Required Fields

Product Description

The dbx 540 features a Class A tube preamplifier, switchable phantom power, phase invert, selectable -20dB pad, and a super fast in-line optical compressor. The front panel includes a TRS microphone input - a standout feature typically not found on 500-series preamps.

The easy-access interchangeable 12AX7 preamp tube allows you to experiment with a variety modern and vintage tubes to customize the 540’s sound and performance to your taste. The switchable (in/out) compressor provides adjustable attack and release, and when it’s in use, the on-board VU meter automatically changes from displaying master level to amount of gain reduction, so you can view the exact results of the compression being applied. Editing is done using our smooth, responsive hand-machined controls. And last but not least: The dbx 540’s audio circuit uses LME49720 ultra-low distortion/low noise Op Amps, for superb audio output.

Features

  • Suitable for use in all 500-series-compatible systems
  • 12AX7 electron tube
  • Class A transformerless high voltage signal path
  • Adjustable optical compressor
  • Switchable phantom power
  • Switchable phase invert
  • Switchable -20dB pad
  • Dual-function VU meter: master volume / gain reduction
  • Input gain control
  • Output volume control

Specifications

  • Mic/Line Input Connectors: TRS balanced
  • Impedance: 3k Ohms
  • Mic Input Gain: 10dB to 60dB
  • Phase Reversal: Switchable
  • Phantom Power: +48V, switchable
  • Instrument Input Connector: 1/4” jack unbalanced (or XLR from back panel)
  • Instrument Input Gain: 0dB to 45dB
  • Output Connectors: XLR & 1/4" jack (back panel)
  • Line in Frequency Response: 10Hz to 40kHz within 1dB
  • Mic in Frequency Response: 10Hz to 40kHz within 2.5dB
  • Compressor Ratio: 1:1 - 10:1
  • Compressor Attack: 1ms - 100ms
  • Compressor Release: 0.1s - 3s
  • Shelving filter: 80Hz
  • Slope: 16dB
  • VU meter: -20dBu - +3dBu
  • THD: 0.05% (unweighted)
  • Signal to Noise: >101dB
  • Power Supply: 500 Series power supply required

More Information

Condition New
Tube or Solid State Tube
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot

Reviews

No one has written a review yet. Be the first!

* Required Fields

Share Your Opinion

The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the dbx 540 Tube Mic Preamp with Optical Compressor . Once you submit your review, please check your email and verify your address to have it posted.

How do you rate this product?
loader
Loading...
loader
Loading...