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LPU IV Phono Pre Amplifier Tube Valve Amplification

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LPU IV Phono Pre Amplifier Tube Valve Amplification
SW1X Audio Design™ LPU IV  Phono Pre Amplifier Features:
  • Specially Selected and Harmonically Matched Component & Material Quality
  • MM Phono Pre amplifier is suitable for all moving magnet (MM) or moving coil (MC) in combination with a matching SUT
  • 3 Gain Stage Pentode Input-RIAA-Double Triode Intestage-Triode Connected  Output Stage Design
  • Signal Output Transformer De-coupled, Zero NFB, Triode Valve Output Stage in Pure Class A, (inductive loading & de-coupling) Circuit Topology
  • SW1X Audio DesignCustom Designed Signal Output Transformers
  • Based on 2 x 6SJ7 Pentodes Input, 1 x 6SN7 Double Triode and 2 x 6F6 Triode Connected Pentodes on Output
  • Active Series-Resistor-less RIAA Equalization for maximum dynamics
  • 5U4GB Valve Rectified C2LC2LRC (choke filtered) B+ Power Supply
  • 47K Input Impedance & < 200 Ohm Output Impedance
  • Total Gain is approx. 46-52 dB depending on the Choice of Valves
  • Maximum Input Voltage: 300mV
  • 2 x Mains Transformers & up to 5 Chokes

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