ART Pro Audio Pro VLA II - 2-Channel Opto Isolator/Tube-Based Leveling Amplifier

The ProVLA II is a tube driven Vactrol-based Compressor / Leveling amplifier designed to excel in any professional audio environment. Superior performance and an incredible tone makes the ProVLA II and indispensable tool for tracking, mixing, mastering, dynamic control of live sound sources or for use in broadcast audio.

Capable of delivering a far more musical natural sounding and sonically transparent compression than competitive units in its class, the ProVLA II uses an Opto-electronic circuit rather than the more typical design VCA driven level detection circuit. This VCA-less design coupled with a 12AT7 vacuum tube in the gain stage makes the Pro-VLA II the ideal dynamic control device for critical audio applications.

Exceptional signal integrity with extremely low noise and low distortion is achieved in the ProVLA II by utilizing a transformerless design throughout.

Features

• VCA-Less Vactrol Opto-Compression Design
• Mastering Quality Audio Signal Path with Tube Gain Stage
• Enhanced Link Mode -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
• 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/-10dBu Mode Switch Optimizes Pro-VLA II For Interface with Professional OR Consumer Grade Components
• Active Balanced XLR And 1/4-Inch Inputs and Outputs
• Toroidal Transformer Reduces Mechanical and Electrical Hum

Specifications

• Equivalent Input Noise: @+4dBu: -99dBu ("A" weighted) / @-10 dBV: -107dBu ("A" weighted)
• Maximum Attenuation: 30dB
• Input Impedance: 10K Ω
• Maximum Input Level: +20dBu (in +4dBu mode) / +10dBV (in -10dBV mode)
• Maximum Output Level: +20dB max
• Frequency Response: 10Hz to 100KHz (+/- 0.5dB)
• Dynamic Range: > 100dB (20-20KHz)
• Attack Time: 0.25msec. to 50msec. variable
• Release Time: Variable 150ms to 3s
• Slope: Variable 2:1 to 20:1
• Total Harmonic Distortion: <0.1% (typical)
• Dimensions: 3.5" x 19" x 9.2" (8.9cm x 48.3cm x 23.3cm)
• Weight: 10.5lbs (4.76kg)