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Nor1205 ¼ inch insert voltage preamplifier

Nor1205 ¼ inch insert voltage preamplifier

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Part Number:Nor1205

Nor1205 ¼ inch insert voltage preamplifier

¼” Microphone Preamplifier with insert voltage calibration and LEMO connector. This preamplifier is designed for calibration purposes using the insert voltage technique. The insert voltage technique is used for determine the open circuit voltage of a microphone cartridge.


Frequency range:      2Hz to 200kHz ±0.2dB
Input impedance:      20 Gohms, 0.2pF
Output impedance:      55 ohms @ 1kHz, CS: 20pF
Noise, A-weighted, CS 20pF:      3µV
Noise linear, CS 20pF:      <6µV
Gain, typical:      -0.15dB
Temperature, operation:      -40 to +60°C
Temperature, storage:      -40 to +85°C
Humidity, operation and storage:      0 to 95% RH
Current consumption (120V or ±60V):      2.5 mA
Current consumption (28V or ±15V):      0.7 mA
Dimensions:      Length; 77.5 mm
Diameter:      6,35 mm (front part) 12.7 mm (connector part)
Weight:      27 g
CE classification, EMC:      EMC: EN50081-1, EN50082-1
CE classification, safety:      EN61010-1, 1993 portable equipment pollution category 2

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