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Dual Mono, Pure Class A Parametric Music Equalizer

 

  • Pure Class A, 100% discrete design
  • Smooth musical detail and sonic excellence
  • Minimum audio signal path
  • Dual mono operation
  • Transparent active and passive filter design
  • High headroom +30dB Very low noise -94dB
  • Fully balanced inputs and outputs
  • DC coupled, no transformers in audio path
  • Switched frequencies in high and low bands
  • Mid bands use X10 frequency for extended range
  • Wide bandwidth -3dB 1Hz to 450kHz
  • Low distortion less than 0.5% THD and IMD
  • All signal routing with sealed silver relays Conductive plastic potentiometers for low noise
  • External 150W toroidal power supply 100% discrete power supplies for audio path
  • Long lasting, stainless steel hardware
  • Circuit Topology    High-voltage 100% discrete, balanced and symmetrical Class A
  • Output Gain Range    Unity Gain
  • 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 (EQ in)
  • Distortion THD, IMD    0.5% (typical 0.05% at +6dB 1kHz)
  • Frequency Response -3dB    1Hz to 450kHz (input band limited)
  • Equalizer Type    Passive high and low bands plus two fully parametric mid bands
  • Bypass    Hard-wire relay bypass for equalizer in-out
  • Low Band F1    Passive, amplitude to -32dB to +32dB shelf or peak-dip curve
  • F1 Frequency Range    Switched 10 position 18Hz, 25, 30, 50, 72, 100, 150, 215, 300, 450Hz
  • Mid Band F2    Active, amplitude to -16dB to +16dB peak-dip curve
  • F2 Frequency Range    Variable 35Hz to 450Hz (x10) 350Hz to 4k5Hz, Q (width) 0.3 to 3.0
  • Mid Band F3    Active, amplitude to -16dB to +16dB peak-dip curve
  • F3 Frequency Range    Variable 160Hz to 2k0Hz (x10) 1k6Hz to 20kHz, Q (width) 0.3 to 3.0
  • High Band F4    Passive, amplitude to -26dB to +26dB shelf or peak-dip curve
  • F4 Frequency Range    Switched 10 position 1k5Hz, 2k5, 3k5, 5k, 7k2, 10k, 12k5, 15k, 20k, 25kHz
  • AC-DC Power    External AC supply, 150w toroidal transformer, 4 pin cable 90v isolated,
  • (B2T Power Supply Included)    100-240v selectable 50/60Hz, 150w max
  • Dimensions    19 x 3.5 x 12 in (482 x 88 x 305mm)

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AVALON - AD2055

Avalon

SONIC EXCELLENCE

The Avalon AD2055 Pure Class A music equalizer is the most powerful, low noise parametric equalizer available today. Designed to optimize absolute signal integrity and musical performance, the AD2055 combines the best of active and passive filter topologies with sonic excellence unequaled by lesser designs. The AD2055 is the perfect solution for two buss music-program equalization, special instrument EQ and FX applications and ultra high performance mastering studio's.

Features include state-of-the-art, balanced 100% discrete, Pure Class A signal amplifiers, practical user features and rugged hardware designed to deliver true high performance audio for many years. 

PASSIVE-ACTIVE FILTER DESIGN

Avalon equalizers feature the unique combination of both active and passive filter EQ designs. This special combination enables the AD2055 to deliver high speed transient detail at the operational extremes of real-world equalization demands. The passive high and low bands offer alternate musical tone range to the full function active parametric mid bands. Passive equalizers have long been a favorite with music lovers around the world.  Full bodied, powerful (up to +/-32dB, 64dB range !) and sweet frequency selections are the benefits of the passive high-low EQ bands. The full bandwidth twin mid bands provide variable frequency selection (X10 frequency multipliers for very wide range), variable Q (width) and amplitude control. 

MINIMUM SIGNAL PATH DESIGN

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 give 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 Avalon AD2055 breathes life!

Features And Specs

Dual Mono, Pure Class A Parametric Music Equalizer

 

  • Pure Class A, 100% discrete design
  • Smooth musical detail and sonic excellence
  • Minimum audio signal path
  • Dual mono operation
  • Transparent active and passive filter design
  • High headroom +30dB Very low noise -94dB
  • Fully balanced inputs and outputs
  • DC coupled, no transformers in audio path
  • Switched frequencies in high and low bands
  • Mid bands use X10 frequency for extended range
  • Wide bandwidth -3dB 1Hz to 450kHz
  • Low distortion less than 0.5% THD and IMD
  • All signal routing with sealed silver relays Conductive plastic potentiometers for low noise
  • External 150W toroidal power supply 100% discrete power supplies for audio path
  • Long lasting, stainless steel hardware
  • Circuit Topology    High-voltage 100% discrete, balanced and symmetrical Class A
  • Output Gain Range    Unity Gain
  • 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 (EQ in)
  • Distortion THD, IMD    0.5% (typical 0.05% at +6dB 1kHz)
  • Frequency Response -3dB    1Hz to 450kHz (input band limited)
  • Equalizer Type    Passive high and low bands plus two fully parametric mid bands
  • Bypass    Hard-wire relay bypass for equalizer in-out
  • Low Band F1    Passive, amplitude to -32dB to +32dB shelf or peak-dip curve
  • F1 Frequency Range    Switched 10 position 18Hz, 25, 30, 50, 72, 100, 150, 215, 300, 450Hz
  • Mid Band F2    Active, amplitude to -16dB to +16dB peak-dip curve
  • F2 Frequency Range    Variable 35Hz to 450Hz (x10) 350Hz to 4k5Hz, Q (width) 0.3 to 3.0
  • Mid Band F3    Active, amplitude to -16dB to +16dB peak-dip curve
  • F3 Frequency Range    Variable 160Hz to 2k0Hz (x10) 1k6Hz to 20kHz, Q (width) 0.3 to 3.0
  • High Band F4    Passive, amplitude to -26dB to +26dB shelf or peak-dip curve
  • F4 Frequency Range    Switched 10 position 1k5Hz, 2k5, 3k5, 5k, 7k2, 10k, 12k5, 15k, 20k, 25kHz
  • AC-DC Power    External AC supply, 150w toroidal transformer, 4 pin cable 90v isolated,
  • (B2T Power Supply Included)    100-240v selectable 50/60Hz, 150w max
  • Dimensions    19 x 3.5 x 12 in (482 x 88 x 305mm)

Commander

AVALON - AD2055

AVALON - AD2055

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