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 inputѝa standout feature typically not found on 500-series preamps.
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.
Push and shape the tone of any microphone with the full-featured dbx 540!
Suitable for use in all 500-series-compatible systems
12AX7 electron tube
Class A transformless high voltage signal path
Adjustable optical compressor
Switchable phantom power
Switchable polarity invert
Switchable -20dB pad
Dual-function VU meter: master volume / gain reduction
Input gain control
Output volume control
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