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HiFi 12AT7 +12AX7 Vacuum Tube Stereo Preamp Board PCB Refer Hetian Mau's Circuit
HiFi 12AT7 +12AX7 Vacuum Tube Stereo Preamp Board PCB Refer Hetian Mau's Circuit
HiFi 12AT7 +12AX7 Vacuum Tube Stereo Preamp Board PCB Refer Hetian Mau's Circuit

HiFi 12AT7 +12AX7 Vacuum Tube Stereo Preamp Board PCB Refer Hetian Mau's Circuit

$ 6.34

  • Amplifier Class: Universal
  • Brand: SENGTERBELLE
  • Color: Green
  • Compatible Brand: Universal
  • Compatible Model: Universal
  • Features: Universal
  • MPN: Does not apply
  • Type: Board

Description

Details： PCB size: 180x140x1.6MM FR4 A grade sheet Work voltage: DC260V+DC260V+DC12.6V+DC12.6V Tube model:2pcs 12ax7+2pcs 12at7 Output stage: The SRPP method is adopted, but the difference of this SRPP method is that there is no cathode resistance between the cathode of the upper tube and the anode of the lower tube. Different from general voltage amplification, the third-stage SRPP output stage does not have any voltage amplification effect. It is only used as a buffer stage to reduce the output impedance and increase the output current, but it can drive a stronger load than a normal cathode follower. The overall dynamic and high-frequency response are slightly better than M-7, and its analytical power and signal-to-noise ratio are higher. Filament: One input and two output two sets of voltage stabilizers, which supply power to the left and right channel electron tubes respectively. Delay to turn on the output Note： This is a diy preamplifier pcb ，have no any parts ！