AD2077 Pure Class A Dual Mastering 4 band active-passive EQ

The sweet science - no, not pugilism, mastering. The art of mastering is a rarified skill, one that has made the careers of engineers whose names inspire something akin to reverence. Whether or not you are possessed of "big ears," the Avalon AD2077 makes your fingers more magical than they ever have been. A little cloudy around 2K? A little wooly on the bottom? No problem. The AD2077 has you covered.

The AD2077 mastering equalizer is an ultraistic design optimizing absolute signal integrity. Design features include 100% discrete pure class A signal amplifiers, state-of-the-art passive and active filter topologies and a DC coupled minimalist signal path. These unique designs offer the professional mastering engineer alternate tone selections in both filter domains while delivering the highest resolution and wide dynamic range with very low noise. Custom gold rotary switches give accuracy in 0.5dB, 1dB and 2dB steps. 104 switched frequencies per channel with X I0 range selectors provide frequency selections from 12Hz to 25kHz at 1/4 octave intervals.

Sonic excellence
The Avalon AD2077 Pure Class A mastering equalizer is the most advanced, low noise, fully switched parametric equalizer available today. Designed for absolute signal integrity and musical performance, the AD2077 combines the best active and passive filter topologies for sonic excellence unequaled by lesser designs. The AD2077 is the perfect solution for two buss music-program equalization and ultra-high performance analog mastering applications. 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 EQ filters. This special combination enables the AD2077 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 +/-20dB, 40dB range !) and sweet frequency selections are the benefits of the passive high-low EQ bands. The full bandwidth twin mid bands provide switched frequency selection (X10 frequency multipliers for very wide range), switched Q (width) and amplitude control.

Minimum signal path design
Avalon's 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 mastering engineer unlimited sonic character and a natural harmonic detail that enhances the program material and becomes one with
the music itself.

100% discrete, pure class A mode
Wide bandwidth 1 Hz to 500kHz
High headroom (+30dB)
Passive and active filter design
Transparent minimal signal path
Very low noise (-94dB)
Balanced DC inputs and outputs
Hard wire silver relay bypass
Large custom rotary gold switches
Stepped slope control -vari Q
High resolution 0.5dB to 2dB stepped amplitude control with X2 range multipliers.
X10 frequency multipliers in the F2-F3 mid range bands