ART Pro VLA II Tube Compressor

  • Item # 0114090
  • Model # PROVLA-II

The Pro VLA by ART is a tube driven Vactrol-based Compressor/Leveling amplifier designed to excel in any professional audio application, including tracking, mixing, mastering, live sound or broadcast… Learn More


In Stock & Ready to Ship

Ship to Store

2-7 business days

Opto-compressor with mastering-quality audio signal path and tube gain stage.


  • Vactrol Opto-compression design (No VCA)
  • Mastering-quality audio signal path with tube gain stage
  • Enhanced link mode
  • Variable threshold, ratio and output controls
  • LED backlit VU input/output level metering
  • LED metering indicates both average level and peak hold
  • Accurate ten segment LED gain reduction metering
  • +4dBu/-10dBV mode switch
  • Active-balanced XLR and 1/4" inputs and outputs
  • Toroidal transformer reduces mechanical and electrical hum
  • While in stereo link mode, channel 1 level control acts as a master output level and channel 2 becomes a balance control between them--optimizing the Pro-VLA II for use as a mastering tool

Technical Specification

ART Pro VLA II Tube Compressor

  • Dimensions: 3.50" H x 19.0" W x 9.17" D (89 mm H x 483 mm W x 487 mm D)
  • Weight: 10.5 lbs. (4.8 kg)
  • Input impedance balanced/unbalanced: 10K Ohms

Maximum levels:

  • Range switch: +4dBu/-10dBV selectable
  • Inputs: +20dBu (in +4dBu mode) / +10dBV (in ”10dBV mode)
  • Output: +20dBu (R load > 10K, 0.1%THD)
  • Output Gain: +20dB max
  • Frequency response: 10Hz to 100KHz (+/- 0.5dB)
  • Dynamic Range: >100dB (20-20KHz)
  • THD: @ 0dBm Out <0.1% (typical)

Equivalent Input Noise (EIN)

  • @+4dBu: -99dBu ('A' weighted)
  • @-10 dBV: -107dBu ('A' weighted)
  • Attack time: 0.25msec. to 50msec. variable
  • Release time: 150msec. to 3 sec, variable
  • Slope variable: 2:1 to 20:1
  • Max. attenuation: 30dB