AD2022
Préampli Micro Dual Mono classe A

Circuit Topology :   Twin cascode FET and bipolar low level signal amplifiers, 
    high-voltage, 100% discrete, symmetrical Pure Class A
Input Type and Load :   Transformer balanced low-ratio, 50, 150, 600 and 1k5 ohm input load selection 
Maximum Mic Level :   +36dB balanced XLR pin 2 hot (with -20dB passive attenuator)
Maximum Instrument Level   +18dB at 100k ohms instrument input level, standard mono 1/4 inch jack
Input Attenuator :   -20dB resistive pre transformer primary, sealed silver relay
Phantom Power :   +48v regulated 50mA capability, sealed silver relay
High Pass Filter :   Passive, variable from 30Hz to 185Hz @ 6dB per octave, sealed silver relay.
Polarity Reverse :   Sealed silver relay on microphone input
Gain Range Input :   +20dB to +64dB in 4dB steps
Gain  Output Range :   +/- 3dB variable conductive plastic potentiometer
Maximum Output Level :   +36dB balanced 600 ohms, DC coupled, discrete symmetrical Pure Class A
Output Type :   XLR connector, pin 2 hot
Noise EIN Unweighted :   -126dB 150 ohm
Noise 20kHz Unweighted :   -102dB
Distortion THD, IMD :   0.05% nominal
Frequency Response -3dB :   1Hz to 120kHz transformer limit
System Bandwidth :   DC to 1MHz
Output Meter :   High quality, illuminated analog VU meter 0dB = +4dB.
Peak Meter :   Bi-color LED's 0dB and +20dB peak detection circuit.
AC power supply B2T :   External toroidal 100V to 240V, 50-60Hz selectable,
    150 watts maximum.
Cables :   90V ac, 4 pin male power input connector, B2T required, internal DC regulation 
Dimensions :   19 x 12 x 3.5 in (482 x 305 x 89mm)
Weight :   15lbs (6.8kg)
Dimensions - Shipping Carton :   24 x 21.5 x 7.5 in (610 x 546 x 190mm) 
Weight - Packed :   25lbs (11.4kg)