avalon-design ad2055 Scheda Tecnica

AD2055

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Pure Class A, 100% discrete design

Smooth musical detail and sonic excellence   

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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 studios.
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!

Minimum audio signal path

Dual mono  operation

Transparent active and passive filter design

Very low noise -94dB

High headroom +30dB 

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

Conductive plastic potentiometers for low noise

All signal routing with sealed silver relays 

100% discrete power supplies for audio path

External 150W toroidal power supply 

Long lasting, stainless steel hardware