Nagra

PREAMP II-S

MSRP not recorded

The Nagra PREAMP II-S is a tube preamplifier manufactured by Nagra, with two 12AX7/ECC83 tubes and one 12AT7/ECC81 tube selected by Nagra Laboratory. It provides selectable 0 dB and +6 dB gain, output impedance of 9 Ω at 0 dB or 18 Ω at +6 dB, 10 Hz–50 kHz frequency response, and dynamic range above 125 dB. The unit uses an external 12–12.6 V DC power supply with a traditional LEMO connector, a phenolic damping layer beneath its aluminum top cover, XLR and RCA inputs, two XLR outputs, and one RCA output.

MSRP

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Original list price not on record.

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Specifications

THD: <0.01% @ 1 kHz，1 V 有效值輸出，無負載
0: 1 V rms (Gain at +12 dB) (Gain selection switch @ 0 dB, volume potentiometer @ 0 dB)
Nagra: 2x 12AX7/ECC83 1x 12AT7/ECC81
Inputs: XLR RCA 1 to 4
Outputs: 2 x XLR 1 x RCA
Crosstalk: >85 dB @ 1 kHz, 1 V rms out, no load
Weight: 4.8 Kg (10.6 lbs)
Power supply: 12 – 12.6 V DC / 1 A
Dimensions: 380 x 280 x 76 mm (15 x 11 x 3 inches) Add 3cm or 1.2 inches with a VFS plate placed under"
Dynamic range: >125 dB (Gain selection switch @ +6 dB)
Output impedance: 18 Ω Gain selection switch @ +6 dB 9 Ω Gain selection switch @ 0 dB
Power consumption: PMAX 12.6 W
Frequency response: 10 Hz – 50 kHz (+0 / -0.5 dB)
Operating environment: Indoor only Moderate climate
Operating temperature: +15°C to +35°C Standby < 1 W +59°F to +95°F
Total harmonic distortion THD: <0.01% @ 1 kHz, 1 V rms out, no load
Input level to reach 0 db modulometer: 1 V rms (Gain at +12 dB) (Gain selection switch @ 0 dB, volume potentiometer @ 0 dB)
Vacuum tubes selected by nagra laboratory: 2x 12AX7/ECC83 1x 12AT7/ECC81