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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.

Microphone input
The AD2022 incorporates the most advanced high-performance microphone transformer available. Split low-ratio primary windings are carefully combined within a custom mu-metal core for extended smooth frequency response and very low distortion. Sealer silver relays are used for minimal signal invasion. The input signal selector, high pass filter, polarity-phase reverse, +48v power and the 20dB input attenuator all utilize local sealed relay operation. A variable passive high pass filter provides a minimum phase shift design while eliminating low frequency rumble, wind noise and mechanical vibration at sub sonic frequencies.

Symmetrical pure class A design
Two 100% discrete, high-voltage, symmetrical Pure Class A signal amplifiers are utilized per channel. The first operates in a cascaded-cascode FET configuration while the second stage amplifier is fully bipolar. The twin amplifiers share the total available gain requirement. This shared architecture increases the high level headroom capability, improves transient response and doubles the internal bandwidth of the ultra-high performance pure Class A signal amplifiers.

Outpout and metering
High-current DC coupled, Class A discrete amplifiers are utilized for the output drive interface with +36dB capability into all known loads. Two large, high-quality analog VU meters indicate accurate signal readings while bi-color LED's offers peak indication at 0dB and +20dB

Avalon AD2044 features
▪ Symmetrical Pure Class A design, two channels
▪ Microphone and hi-Z instrument inputs
▪ Gain switched 4dB steps plus +/- 3dB fine output trim
▪ Selectable microphone input impedance matching
▪ Low noise -126dB EIN
▪ Ultra high quality, low-ratio, balanced input transformer
▪ Balanced, high-current Class A output to +36dB
▪ Large illuminated analog VU meters and twin peak LED's
▪ Regulated phantom power supply +48v
▪ Input polarity phase reverse
▪ High headroom +36dB input before overload
▪ Input -20dB pad for high level signals
▪ Sealed silver relays for all signal routing
▪ External AC 150w toroidal power chassis
▪ Fully discrete Class A regulated audio power supplies
▪ Deep, musical sound-stage, transparent amplification