6N3 (5670) SRPP Preamplifier Kit (Stereo)

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Quick Details
Brand Name:
Analog Metric
Professional Amplifier
2 (2.0)
Place of Origin:
Hong Kong


Two 6N3 (5670) vacuum tubes are configured in SRPP



  • Two 6N3 (5670) vacuum tubes are configured in SRPP.6Z4 uses as rectifier tube for high voltage supply.
  • A LM1085 IC is employed as regulator for tube filament supply.
  • Voltage Gain: 20dB
  •       Solen Fast MKP film capacitors and Dale resistors are used for signal paths.
  • Spaces are left for large reservoir decoupling capacitors.
  • Symmetric layout design between two channels.
  • Dedicated power and ground railings. Shortest signal paths with minimum parasitic.
  • Power requirement: two 200V AC (100mA) and two 6.3V AC (0.5A)
  • PCB dimension: 177mm x 107mm, 2.4mm thickness and 2oz copper.





Toroid Transformer T120 or two T30L