OldBuffalo 350C tube amplifier HIFI EXQUIS Class A Handmade amp OBF350C

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OldChen (Aiqin Tube Art)

350C tube can be replace directly by EL34 tube

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  • Standard version
  • Luxury version
  • VU Meter Version

Standard Version is with160w power transformer, 10Wx2 output transformers:


VU Meter version is with the VU-meter and alum front panel and is with160w power transformer, 10Wx2 output transformers:   
Luxury version is with VU-meter and alum front panel
and 220W Power transformer and 15wx2 output z11 0.35 steel output transformers:
Luxury back view about transformers size:


Techinical parameters:
  • Rated output power: triode connected 8W(by default), 12W standard connection(special customize)
  • Frequency response: 20Hz - 25KHz(Hifi exquis 1101017)
  • Total harmonic distortion: 1% (1kHz)
  • Input Sensitivity: 500mV - 2000mV(Hifi exquis 1101017)
  • Input impedance: 100KΩ
  • Output Impedance: 4Ω, 8Ω(Hifi exquis 1101017
  • SNR: 88dB
  • Dimensions (W×H×D): 380×165×230mm
  • Rectifier: 5Z3P(Hifi exquis 1101017)
  • Preamp tubes: Shuguang 6N8P×2 or 6N9Px2 please leave a message and tell us your choice during the order
  • Power tube: new Shuguang 350C×2 
  • Package Weight: about 9.5 kg (Hifi exquis 1101017)


  • Power transformer temperature is low
  • Output transformer use a special method do with Teflon wire
  • 70% of tube sound quality is from output transformer, and this is the OldBufflo speciality,  It's for ensuring the best sound quality's conditions
  • OldBufflo tube amp is cheap, because OldBufflo specialy work HIFI tube amp's transformer,
  • Bass is vigorous and powerful, much details, very weak instrument or beating sound can be clearly heared

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  • Power transformer has a low temperature(Hifi exquis 1101017)
  • The power transformer was made with EI66x45 and Teflon film and oxygen-free copper cable(Hifi exquis 1101017)
  • The bass is  vigorous,strong,and with details.
  • Handmade silver wire scaffolding(Hifi exquis 1101017)


Standard and VU meter versions back view:
Luxury version back view:
Next photos show the different transfomer between  luxury version(Left amp) and (standard and Vu meter versions) (Right):

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