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Avalon AD-2044 - Opto-Compressor - Used  From Avalon

A very transparent and straightforward dual mono, stereo-linkable Compressor, with sidechains. In Used, Excellent Condition


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Avalon Design

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What We Think

Like the rest of the Avalon 2000-series products, including their 2022 preamplifier, 2055 Parametric EQ, and 2077 mastering EQ, the Avalon 2044 Compressor is very transparent. Our favorite quote about the piece is "It's the best compressor I never heard" which is just about on the money.A The 2044 is a very transparent and straightforward dual mono, stereo-linkable compressor that has loads of headroom, and the capability for a really hot output.

Manufacturer's Description from Avalon

The AD2044 features 100% discrete, pure class A signal amplifier configured with high speed current monitored optical control elements. These "invisible" opto elements enable the AD2044 to deliver totally transparent, low noise gain reduction within the minimalist signal path design. No VCAs are incorporated. Variable attack and release controls plus side chain access, provide unlimited creative control from soft compression to hard limiting.

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, mono bass and instruments and mastering applications.

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.

Custom manufactured, 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 compression.

Avalon's advanced true symmetry design offers high-voltage, 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.

Avalon Design

About Manufacturer

Wynton R. Morro founded Avalon with the desire to bring the art of music recording closer to the essence of the original performance. Avalon's pure Class A recording systems provide the world's leading engineers, producers and musicians with state-of-the-art electronics designed especially for high-fidelity music and sound recording, These carefully engineered systems enhance the creative senses and become one with the music itself. Avalon systems utilize 100% discrete, high-bias pure Class A audio amplifiers. These pure Class A amplifiers are incorporated into minimal signal path designs which include sealed silver relays, balanced DC coupled high-current "outside-world" drivers, fully discrete linear DC regulators, low noise toroidal power transformers and selected high quality active and passive components. This powerful combination of design features gives increased musical headroom and greater dynamic transient capability for a truly transparent audio passage. Avalon's unique design features, highest quality components and continued pursuit of sonic excellence assures the most harmonious musical signal transfer available today. Whether you are recording a solo vocalist, capturing the delicate nuance of an acoustic instrument, mastering music and film productions or recording symphonies, let Avalon take you to the leading edge in analog and experience sonic reality like never before!


*Circuit topology: High-voltage 100% discrete, balanced and symmetrical Class A

*Output Gain Range: Variable -10dB to +10dB, center detent 0dB Maximum Input Level: +30dB balanced XLR pin 2 hot

*Maximum Output Level: +32dB balanced 600 ohms, DC coupled, high-current discrete Class A

*Input / Output Type: XLR type, pin 2 hot balanced

*Noise 20kHz Unweighted: -94dB (compressor in)

*Distortion THD, IMD: 0.5% (typical 0.05% at +6dB 1kHz)

*Frequency Response: -3dB 1Hz to 450kHz (input band limited)

*Gain Reduction Meter: Illuminated gain reduction meter 0dB to -20dB range

*Output Meter: Professional moving coil type -20dB to +3dB (0VU=+4dB)

*Compressor Type: Optical passive attenuator

*Bypass: Hard-wire relay bypass for compressor in-out

*Link Switch: Large illuminated push switch for stereo L-R linking

*Make Up Gain:,/b> Variable 20dB range (-10dB to +10dB)

*Threshold: Threshold variable -24dB to +20dB

*Ratio: Ratio-compression variable 1:1 to 20:1

*Attack:,/b> Variable 0.5mS to 150mS

*Release: Variable 80mS to 5 seconds for 12dB release

*Side-Chain: XLR type, pin 2 hot balanced (switch/relay selectable from front panel)

*AC-DC Power: External AC supply, 150w toroidal transformer, 4 pin cable 90v isolated

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