5670 *2 Tube BD139 BD140 Hybrid Class A Headphone Amplifier Refer To LEHMANN

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5670 *2 Tube BD139 BD140 Hybrid Class A Headphone Amplifier is based on LEHMANN headphone amp circuit with tube rectifier/driver stage

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$49.99

Fully assembled,Buy with confidence

Based on LEHMANN headphone amp circuit with tube rectifier/driver stage

Up for your consideration is a headphone amplifier based on LEHMANN headphone amp,As we know the headphone amplifier of LEHMANN cost many $$$, Now you have chance to own it for an increditable price! It uses one 6Z4 rectifier tube to rate power for two 6N3(5670) tubes in driver stage, Two pair TOSHIBA BD139/BD140 high performance audio transistors in power amplify stage.The sonic is very musicial, Has great silky &sweet sound but also has very good dynamic and much punch on bass. Note: Schematic of this item is unavailable to be provided  

Features

  • Original TOSHIBA BD139/140 power transistors in output stage
  • Beijing 6N3(5670) dual troide and 6Z4 recifier tubes in preamp stage.
  • Coupling caps are WIMA in top line from GERMAN.
  • Filter capacitors are NICHICON 290UF/450V from JAPAN for tube section and golden NOVA 10000UF*2/35V for transistor section.
  • LM317 /337 to supply power for filaments.
  • 1% tolorance high precision metal film resistors with very low noise
  • 1.6MM thickness high quality fiber PCB board with dual side layout, 2 OZ copper coated allow large current go through.

 

Specifications

  • Power supply: AC 15V~0~15V (10W)*1 , AC 150V~0~150V (>10ma)*1 , AC 6V (4A) *1
  • Input impedance:100KOhm
  • Output impedance::32~600 Ohm
  • Frequency response:20Hz-20KHz
  • Demension :140MM* 140MM L*W

 

Package Content:

  • One assembled 6N3 (5670) tube headphone amplifier. 

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