Nagra Classic preamp

Electronics
Frequency response: 10 Hz – 50 kHz (+0 / -0.5 dB)
Dynamic range: >125 dB (Gain at +12 dB)
Minimum input level to reach 0 dB (meter) 0.28 V rms (Gain at +12 dB)
Maximum input level to reach 0 dB (meter) >25 V rms (Gain at 0 dB)
Crosstalk: >85 dB

Total harmonic distortion (THD) <0.01% at 1 kHz out, no load Input impedance: 50 KΩ Output impedance: 6 Ω Vacuum tubes (selected by Nagra Laboratory): 2x 12AX7 / ECC83 1x 12AT7 / ECC81 Power consumption: 12 V 1040 mA < 1o mW in standby Power supply: 115 V or 230 V AC input Connections Inputs: XLR RCA 1 to 4 Outputs: 2 x XLR 1 x RCA General Dimensions: 379 x 277 x 76mm (12.2 x 10 x 3 inches) Weight: 4.9 Kg (10.8 lbs)