Professional
Vactrol®/Tube Leveling Amplifier
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Retail
$679 US
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Our
Price $578 US
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Our
Price $925 CAD
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The
PRO VLA (Vactrol-based Leveling Amplifier) is a multi-purpose tool for audio
engineering and recording. Enclosed in a 2U(3.5" high) rack-mountable chassis
are two independent channels of analog leveling/compression designed to work
seamlessly with any recording, sound-reinforcement, or electronic instrument
setup. ART’s PRO VLA circuitry is a hybrid design utilizing the latest and
most advanced analog and tube technology. Using a transformerless design throughout,
the PRO VLA maintains exceptional signal integrity and extremely low noise.
Its VCA-less design utilizes optical electronics (Vactrol) coupled with a
12AX7 vacuum tube gain stage for superior musical performance.
The PRO VLA is a soft knee leveling amplifier by design. Although it is capable
of providing a thoughougly "squashed" signal, the PRO VLA was designed to
excel in areas where transparent, expressively musical dynamics control is
desired. In addition to making signal levels more manageable, it is common
practice to apply compression or limiting to a signal to make it louder or
more "in-your-face". The benefit of using the PRO VLA for these applications
is in its design. By utilizing opto-electronics, the PRO VLA allows you to
add more compression without sounding like you’re squashing the daylights
out of the signal. Unlike typical compressors which use VCA’s to control level
detection, the PRO VLA is very musical. The nature of its operation is much
like the way your eye adjusts to light. Just as your eye transparently adjusts
to changes in light, the PRO VLA adjusts to changes in signal level.
Developed in partnership with studio and live sound engineers, the PRO VLA
possesses a "sound" that is not available from any other compressor on the
market - at any price! A member of the ART Reference Series, the PRO VLA was
designed and constructed with the absolute best components, assuring a lifetime
of quiet, reliable performance.
® Vactrol is a registered trademark of EG&G Vactec Inc., St. Louis, MO, USA
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Dimensions: |
19"W X 6.5"D X 3.5"H |
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Weight: |
9 Lbs |
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Input Connections: |
Balanced XLR & 1/4" TRS |
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Output Connections: |
Balanced XLR & 1/4" TRS |
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Input Impedance: |
XLR: 20K ohms |
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Input Impedance: |
1/4": 1M ohms |
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Output Impedance: |
XLR: 600 ohm |
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Output Impedance: |
1/4": 300 ohms |
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Maximum Input Level: |
XLR: +21dBm |
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Maximum Input Level: |
1/4": +21dBm |
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Maximum Output Level: |
XLR: +27dBu (RL = 100KW, THD = 5%) |
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Maximum Output Level: |
XLR: +27dBu (RL = 100KW, THD = 5%) |
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Maximum Output Level: |
1/4": +21dBu (RL = 100KW, THD = 5%) |
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Frequency Response: |
10Hz to 20kHz (+/- .5dB) |
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Dynamic Range: |
>100dB
(20-20kHz) |
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THD @ 0dB out: |
<0.1%
(typical) |
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EIN: |
XLR to XLR: -99dBm (‘A’ weighted) |
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EIN: |
1/4" to 1/4": -97dBm (‘A’ weighted) |
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Attack Time: |
Fast: 2ms |
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Attack Time: |
Slow: 15ms (20dB comp.) |
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Release Time: |
Fast: 300ms |
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Release Time: |
Slow: 100ms-3sec. |
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Slope: |
Variable: 2:1 to >10:1 |
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Maximum Attenuation: |
30dB |
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Maximum Attenuation: |
100-125VAC, 25W - (USA) Internally fused |
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Power: |
Other power requirements configured for country of destination. |
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Controls: |
Input/ Output level meter select switch |
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Controls: |
Attack Time select switch |
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Controls: |
Release Time select switch |
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Controls: |
Channel Active/ Bypass switch |
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Controls: |
Variable Threshold control |
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Controls: |
Variable Ratio control |
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Controls: |
Variable Output Level control |
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Controls: |
Stereo Link switch |
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Controls: |
10 segment Gain Reduction bargraphs |
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Controls: |
Input/Output signal level VU metering |
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VCA-less Design Provides Unrivaled Musical Performance |
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Provides Superior Dynamics Control For Every Compression Application
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Variable Threshold, Ratio and Output Controls |
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Smooth, Silky and Transparent Sound Quality |
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Variable Input and Output Gain Controls |
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Professional Backlit VU INPUT/Output Level Metering |
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Ten Segment GAIN REDUCTION LED Array |
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XLR and 1/4” Inputs and Outputs |
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Mastering Quality Audio Processing |
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WINNER - 1998 ELECTRONIC MUSICIAN EDITORS CHOICE AWARD |
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5 Year Warranty |
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Designed and Manufactured in The USA |
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Four to Twenty-Four Track Recording Studios |
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FOH Sound Systems |
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Multitrack to Digital Mixing/ Mastering |
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Digital Audio Workstation & Computer Recording |
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MIDI Recording and Samplers |
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Broadcast Edit Suites |
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Club and Fixed Installation Sound Systems |
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