YAQIN MS-650B 845 tube amplifier HIFI EXQUIS signle-ended Class A lamp amp 12AT7 12AU7

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Golden version :


Silver version:








Features: (HIFI EXQUIS)
  • Pre-amplifier uses SRPP form circuit,  wide frequency response, low output impedance
  • Post-deriver uses SRPP form circuit, parallel 2 tubes,  (HIFI EXQUIS)
  • Amplification use low impedence high power triode 845 tube, wide frequency response, High driving force(HIFI EXQUIS)
  • Using top-quality output transformer, Z11(0.35), with top quality proceduce process, 
  • All functions infrared remote control and with ALPS Motorized potentiometer , (HIFI EXQUIS)
  • Using high-quality electronic components to get better sound
  • The use of high-quality electronic components to get better sound quality,
  • With the Preheat buffer function (about 30 seconds), (HIFI EXQUIS)
  • Each channel uses 20,000μF of filter capacitance to the vacuum tube power supply.



Technical parameters:    (HIFI EXQUIS)           
  • Type : Integrated Amplifier
  • Input Power : 110v-240V 50/60hz
  • Output Power : 15W +15W(8Ω) (HIFI EXQUIS)
  • Valve / Tube : PSVANE 845 × 2,  Shuguang's 12AT7 x 2 and 12AU7 x 4
  • Frequency :  10Hz - 32KHz-2dB
  • Degree of Distortion : ≤1.5%10W
  • SNR :  ≥77dB (A weight)
  • Power Consumption : 200-330W
  • Output impedence : 4-8 Ohms
  • Audio Input : 4 Group RCA plug (HIFI EXQUIS)
  • Input Sensitivity : ≤0.3V
  • Size Dimension : L 420mm x W 420mm x H 300mm
  • Colour : Gold Body(HIFI EXQUIS)
  • Net Weight : 37.5 kg
  • Package Weight: 41kg(HIFI EXQUIS)
  • Packing Includes : Tubes, Power Cord, Remote Control






Silver version:



Next it's the packaging list: