Avalon Design AD2044 Datasheet

AD2044

OPTO-COMPRESSOR

Pure Class A music recording systems since 1985.

2000 by AVALON INDUSTRIES, INC. PO Box 5976, San Clemente, California, U.S.A.

Tel: [phone] Fax: [phone]

www.avalondesign.com

[e-mail]

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Pure Class A, 100% discrete design

Smooth musical detail and sonic excellence

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AD2044 FEATURES

SONIC EXCELLENCE

The Avalon AD2044 Pure Class A opto-compressor is the
most transparent, low noise optical-compressor available
today. Designed to optimize absolute signal integrity and
musical performance, the AD2044 combines advanced
electronics with sonic excellence unequaled by lesser
designs. The AD2044 is the perfect solution for two buss
music-program compression, mastering applications,
mono bass and instruments.
Features include state-of-the-art, balanced 100% discrete,
Pure Class A signal amplifiers, practical "real-world" user
features and rugged hardware designed to deliver true high
performance audio for many years.

LINEAR OPTICAL COMPRESSION

Computer matched, high speed linear opto elements
provide the non invasive passive attenuator system for
invisible gain reduction. The AD2044 incorporates a unique
external control loop and current monitored optical driver
for smooth control plus the benefits of traditional vintage
LDR (light dependant resistor) compression.

MINIMUM SIGNAL PATH DESIGN

Avalon's advanced true symmetry design offers high­voltage, large headroom, extended bandwidth and very low
noise. The use of 100% discrete, Pure Class A signal
amplifiers offer the serious music professional unlimited
sonic character and a natural harmonic detail that
enhances the program material and becomes one with the
music itself.

The AD2044 can be found in the world's leading recording
studio's, mastering facilities and artist/producers outboard
racks. These professionals rely on the AD2044 daily to
help them complete their "sonic signature" and turn
recordings into musical masterpieces.

AVAL ON

DESIGN

Minimum audio signal path

Dual mono or Stereo operation
Transparent, non-invasive compression
Very low noise -94dB
High headroom +30dB
Fully balanced inputs and outputs
DC coupled, no transformers in audio path
Variable threshold, ratio, attack & release
Large accurate professional VU meters
Wide bandwidth -3dB 1Hz to 450kHz
Low distortion less than 0.5% THD and IMD
External side-chain access XLR
All signal routing with sealed silver relays
100% discrete power supplies for audio path
External 150W toroidal power supply
Long lasting, stainless steel hardware

AVALON DESIGN PURE CLASS A AD2044 DUAL MONO-STEREO OPTO-COMPRESSOR

2000 by AVALON INDUSTRIES, INC. PO Box 5976, San Clemente, California, U.S.A.

Tel: [phone] Fax: [phone]

www.avalondesign.com

[e-mail]

c

Circuit topology
Output gain range

Maximum input level
Maximum output level
Input-Output type

Noise 20kHz unweighted
Distortion THD, IMD
Frequency response -3dB

Gain reduction meter
Output meter

Compressor type
Bypass
Link switch
Make-up gain

Threshold
Ratio
Attack
Release

Side-chain

AC-DC power
(B2T power supply included)

Dimensions
Shipping weight

High-voltage 100% discrete, balanced and symmetrical Class A
Variable -10dB to +10dB, center detent 0dB

+30dB balanced XLR pin 2 hot
+32dB balanced 600 ohms, DC coupled, high-current discrete Class A
XLR type, pin 2 hot balanced

-94dB (compressor in)

0.5% (typical 0.05% at +6dB 1kHz)
1Hz to 450kHz (input band limited)

Illuminated gain reduction meter 0dB to -20dB range
Professional moving coil type -20dB to +3dB (0VU=+4dB)

Optical passive attenuator
Hard-wire relay bypass for compressor in-out
Large illuminated push switch for stereo L-R linking
Variable 20dB range (-10dB to +10dB)

Threshold variable -24dB to +20dB
Ratio-compression variable 1:1 to 20:1
Variable 0.5mS to 150mS
Variable 80mS to 5 seconds for 12dB release

XLR type, pin 2 hot balanced (switch/relay selectable from front panel)
External AC supply, 150w toroidal transformer, 4 pin cable 90v isolated,

100-240v selectable 50/60Hz, 150w max
19 x 3.5 x 12 in (482 x 88 x 305mm)

30lbs (13.6 kg)

AD2044 SPECIFICATIONS

Avalon reserves the right to incorporate changes in design and in the specifications of this product without prior notice.

Pure Class A music recording systems since 1985.

AVAL ON

DESIGN

AVALON DESIGN PURE CLASS A AD2044 DUAL MONO-STEREO OPTO-COMPRESSOR