• Item: headphone tube amplifier  
  • Type: military lamps ussr 6n3p / 6n23p  
  • Posted: 14 April 2020  
  • Builder: TDAudio  
  • Country: Russian Federation  
  • Comments: 4  


Tube transformerless headphone amplifier.
Tube Amplifier without output transformers, created according to the topology of the shortest path signal on military lamps of the USSR 6n3p and two lamps 6n23p.
It is assembled by hand, the case is made of African Pomel wood, the regulator knob is carved from oak wood, all its components are carefully selected and soldered by surface mounting.
Thanks to such a scrupulous approach to development and creation, the amplifier has a very transparent, powerful dynamic sound, perfectly controlled bass, meets the highest quality standards and is able to meet the needs of the most demanding part of music lovers and audiophiles.
High quality components used for best performance, Japan ALPS potentiometer
Audio input: stereo RCA
Audio Output: 6.35mm headphone / stereo RCA jack (for pre-amplification)
• Volume control Alps blue velvet. Capacitors Matsushita, Rubicon, Roe deer, Polystyrene. MLT resistors of the USSR (great sound). Neutrik Pro input and output jacks.


  • dorsun
  • 15 April 2020 at 05:33AM
  • schematic please
  • TDAudio
  • 17 April 2020 at 06:42AM
  • The scheme is implemented the first lamp phase shifter of the left and right stages, the second and third lamps the cathode repeater has an OOS, low output impedance, the transmission coefficient of the signal is close to unity, it practically does not attenuate the signal, low sensitivity to the ripple voltage, low coefficient of non-linear distortions
    Output signal at 32 ohms (5W)
    Or maybe more
  • mwhouston
  • 10 May 2020 at 02:09AM
  • Looks good.
  • mwhouston
  • 8 August 2020 at 12:02PM
  • Do you have a link to the schematic?

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