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  • Model: Classic No.290
  • Shipping Weight: 25kg

Classic No.290 current feedback vacuum tube preamplifier with shunt regulator power supply.

- low noise shunt regulator
- M-Caps
- Holco and Dale resistors
- Wima capacitors

Technical Specifications
Total Harmonic Distortion: 0.004% (20Hz-20KHz 2Vrms unbalanced)
0.0023% (20Hz-20KHz 3.5Vrms balance)
frequency response: 3Hz-1.5MHz (-3dB low-pass filter OFF)
3Hz-200kHz (-0.75dB )
signal-to-noise ratio: 112dB (A-Weighting 20Hz-20KHz)
Input Impedance: 70K (XLR balanced) voltage (unbalanced); 10K (balanced)
output impedance: 150Ω
input signal interface: 4 (RCA unbalanced);
Gain: 13.5dB
using a tube: 12AT7EH two, 6H30EH a


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