Hi-End 805 VT-143 40W Class A Single Ended SE MONO Block Tube Amplifiers,EF86+EL34 Interstage Transformer

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Hi-End 805 VT-143 40W Class A single ended SE mono block tube valve amplifier DIY kits, It is sold as a pair for stereo audio,The circuit is based on EF86+EL34 Cathode Interstage Transformer,Point to point wiring,The best 805 amplifier ever made in China.Assembled product is available up to your choice.

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Hi-End 805 VT-143 40W Class A Single Ended SE MONO Block Tube Amplifiers Kit,One pair

You are looking at one pair DIY kit of 805 class A single ended mono block tube amplifier, It is one of the best 805 tube amplifier ever made in China, It is designed and built proferssionally which meet senior audiophile's needs of listenning experiences. It has very low distortion,  Only 0.8% total harmonic distortion at 10W output and 0.3% at 1W output, It is more lower than 300B when deliver same power outpu. Made with point to point wiring, That makes the tube amplifier works stable and you are able to change/modify the circuit or components. There are up to 6 transformers in one channel, Two are inside the chassis. They are very heavy, Each mono block weighs 23KG without packing material.

The power transformer and output transformer are the top of transformers on the market, Very low inductance leakage and capacitance to ensure excellent square wave form response,Also very very good frequency response.


  • Tubes are not included due to poor sound with SHUGUANG tubes, Vintage tube would sound much better.
  • Assembled product is available, Pls select in drop-down list if you want.

Tubes(per channel) : 6J8(EF86)*1 , EL34(6CA7)*1 , 805/VT-143 *1


  •  Input RCA: 1 pair
  • Input sensitivity: 700mV
  • Power output : 40W (RMS THD<5%)
  • Input Impedance: 100KΩ
  • Output Impedance: 4Ω/8Ω/
  • AC Input: 220V/230V (Currently only 220V/230V version is available,110V version will take around one month to customize the power transformer)
  • Power Consumption: 130W
  • Insulation Intensity: 230MΩ (DC2000V,1min)
  • Frequency Response:    20Hz – 20KHz +-0.1dB( 1W )
  • Dimension: 430*260*200(W-D-H)
  • Net Weight: 23.5KG  (Per Channel)


Packing List

  • One pair 805 single ended mono block tube amplifiers

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