OldBuffalo 6C19 ( 6S19 ) Tube amplifier handmade silver wire scoffolding HIFI EXQUIS sound like 300B

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85w default version is use 85w power transformer, 

110w version is use 110w power transformer, it's more cool and more stable for summer use, and have more dynamique of sound.

Chinese tube 6C19 is equals 6S19 tube 

More details




  • 85w Power Transformer
  • 110w Power Transformer
  • 6.5Wx2
  • 8Wx2

6C19 is a triode like 2A3 or 300B, it's a small tube but have the most power in the small tube , it has 6w power, choicing a good work point(bias value) can give it a much better sound like than 300B or 2A3 . 6C19's internal resistance is lower than 2A3, have only 300ohms, but transconductance is higher than 2A3, amplification factor lower than 2A3, the 6C19 is more hard to be drivered


Technical parameters:
  • Tube : Preamp tube: 6J1 x2 
                  Power tube: 6C19 x2
  • Rated output power: 6W * 2
  • Frequency response: 20Hz - 25KHz (Hifi exquis 1101017)
  • Total harmonic distortion: 1% (1kHz)
  • Input Sensitivity: 500mV - 2000mV
  • Input impedance: 100KΩ
  • Output Impedance: 4Ω, 8Ω (Hifi exquis 1101017)
  • Power transformer: 85w   
  • Inductor:  use a transformer 
  • Output transformer: 2 PCS (Hifi exquis 1101017)
  • Voltage: 110v-235V 50/60hz
  • SNR: 88DB (Hifi exquis 1101017)
  • Net weight: 5KG



  • Use oil capacitors to make the sound more layered  (Hifi exquis 1101017)
  • 6c19 is triode which has a lowest internal resistance.
  • His power can reach 6W, its bass effect shock.
  • Handmade silver wire scaffolding   (Hifi exquis 1101017)
  • 6C19 has some same characteristics with 2A3, 300B tube, this is also reason why we often choose it.
  • .6C19's resistance lower than 2A3, such lower resistance tube can give a better sound like 6N5P 6P13P 300B.  (Hifi exquis 1101017)
  • 6C19 European name is 6S19, 6S19i is a very famous tube for music.

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Teflon silver wire is used inside in this amplifier's:

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