Wednesday, January 18, 2012

NAT Audio Magnetic preamp


























$12000

Design Features

- transformer coupled circuit (without any capacitor on direct or indirect signal path)
- absolute zero feedback circuit
- approx. 1.000.000uF of capacitance in analog power supply section
- pure dual mono construction
- custom designed ultimate wide-bandwidth output transformers (with perfect square wave response)
- ten precise selected high performance j-fet device per channel
- two additional separate transformers for digital control and analog supply
- attenuation network form silent reed relay – encoder rotation knob type
- remote control made from solid block of aluminum
- all aluminum modulated chassis that includes 5mm thick top cover
- front panel made from 15mm thick aluminum material
- built-in measurement for total hours of line stage work
- teflon insulated gold plated connectors
- gain adjustment

Technical Specification

Type - Absolute Zero Feedback
Operation - Pure Single-ended (RCA) or Pure balanced (XLR)
Frequency Response - 8 to 400 kHz, -3 dB; 20Hz to 20kHz, +/-0,1dB
Noise - 100 dB IHF reference to 1V
Gain - 15 dB (X 5.6) & 20dB (X 10) RCA or XLR output; select on rear panel
THD & N - <0.1 %
Input Impedance - >20 kohms
Output Impedance - <90 ohms–RCA or XLR output :600 ohms balanced compatibile
Stereo Separation - >95 dB @ 10 kHz
Polarity Status - Invert phase (180 degree)
Power Requirements - 100VAC to 240VAC (50 to 60 Hz), max. 20 VA
Dimensions - 19" (483 mm) wide 16” (400 mm) deep 7.1" (180 mm) high

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