Applied Research and Technology (ART) Pro VLA Specification
PRO VLA
PROFESSIONAL TWO CHANNEL VACTROL®/TUBE COMPRESSOR - LEVELING AMPLIFIER
T
he PRO VLA (Vactrol-based Leveling Amplifier) is a multi-purpose tool for
audio engineering and recording. Its two independent (and stereo link-able)
channels of analog leveling/compression are designed to work seamlessly with
any recording, sound-reinforcement, or electronic instrument setup. A VCA-less
design utilizes optical electronics (Vactrol) coupled with a 12AX7 vacuum tube
gain stage for superior musical performance.
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”. By utilizing opto-electronics, the PRO
VLA allows you to add more compression without hearing it - unlike typical
compressors which use VCAs to control level detection.
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 A R T Reference Series, the PRO VLA was
designed and constructed with the absolute best components, assuring a lifetime
of quiet, reliable performance.
FEATURES:
VCA-LESS DESIGN
PROVIDES UNRIVALED
MUSICAL PERFORMANCE
PROVIDES SUPERIOR
DYNAMICS CONTROL FOR
EVERY COMPRESSION
APPLICATION
VARIABLE THRESHOLD,
RATIO AND OUTPUT
CONTROLS
SMOOTH, SILKY AND
TRANSPARENT SOUND
QUALITY
VARIABLE INPUT AND
OUTPUT GAIN CONTROLS
PROFESSIONAL BACKLIT
VU INPUT/OUTPUT LEVEL
METERING
TEN SEGMENT GAIN
REDUCTION LED ARRAY
XLR AND 1/4” INPUTS AND
OUTPUTS
MASTERING QUALITY
AUDIO PROCESSING
WINNER - 1998
ELECTRONIC MUSICIAN
EDITORS CHOICE AWARD
5 YEAR WARRANTY
DESIGNED AND
MANUFACTURED IN THE
USA
~ Mic or Instrument Direct to Tape through the Pro MPA and Pro VLA ~
~ In the Channel Insert of a Mixer ~
~ Pro VLA Used for Mastering Before Digital Mix Deck ~
CHANNEL INSERT SEND
CHANNEL INSERT RETURN
2-MIX OUT
L R
Winner 1998 Electronic
Musician Editors Choice
Award for Best Dynamics
Processor Under $1000.
“It’s one of the few products
I’ve encountered that has
caused me to rethink the
way I work in my studio.
That’s high praise indeed.”
Electronic Musician
June 1997
“It’s one damned impressive
device from the second I
ran a signal into it until I
turned it off.”
Recording
September 1997
SPECIFICATIONS:
Dimensions 19”W X 6.5”D X 3.5”H
Weight 9.0 lbs
Input/ OUtput Connections balanced XLR & 1/4” TRS
Input Imp. XLR, 1/4” 20K ohms, 1M ohms
Output Imp. XLR, 1/4” 600 ohm, 300 ohms
Max. Input Level, XLR, 1/4” +21dBm
Max. Out Level, XLR +27dBu (RL = 100KW, THD = 5%)
Max. Out Level, 1/4” +21dBu (RL = 100KW, THD = 5%)
Freq. Response 10Hz to 20kHz (+/- .5dB)
Dynamic Range >100dB (20-20kHz)
THD @ 0dB out: <0.1% (typical)
EIN XLR to XLR -99dBm (‘A’ weighted)
1/4” to 1/4” -97dBm (‘A’ weighted)
Attack Time Fast ,2ms, Slow 15ms (20dB comp.)
Release Time Fast-300ms, Slow 100ms-3sec.
Slope Variable: 2:1 to >10:1
Max. Atten. 30dB
Power 100-125VAC, 25W (USA), Internally fused
Other power requirements configured for country of
destination
Warranty Five Years
APPLICATIONS:
Four to Twenty-Four Track Recording Studios
FOH Sound Systems
Multitrack to Digital Mixing/ Mastering
Digital Audio Workstation & Computer Recording
MIDI Recording and Samplers
Broadcast Edit Suites
Club and Fixed Installation Sound Systems
® Vactrol is a registered trademark of EG&G Vactec Inc., St. Louis, MO, USA
APPLIED RESEARCH AND TECHNOLOGY, INC. 215 TREMONT STREET, ROCHESTER, NY 14608 USA
Voice: 716/436.2720, Fax: 716/436.3942, http://www.artroch.com
Features and specifications subject to change without prior notice.
1998 Applied Research and Technology, Inc. 000-102-212
PRO VLA
SPECIFICATIONS
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