XiangSheng 728A Tube Pre-Amplifier HIFI EXQUIS Famous Japanese Cuircuit 12AT7 12AU7 6Z4 Pre-amps with tones adjustables

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Xiangsheng famous 728A tube Pre-Amplifier with tons control version,  
The pre-amplifier improved based on famous  Wada Shigeho's Style Electric circuit, which was Introduced by Wada Shigeho in the early 1960s and gave an excellent  performance.

More details




  • With all tubes
  • Without tubes

Silver / Black with all tube option is with all tube:   2 x chinese 6z4 rectifier ,  2 x 12au7, 2 x 12at7 , 1x decoration tube

Silver / Black without tube option is without any tube, except one of decoration tube, 


Wonderful  stereo  Pre-Amplifier,  built  with the  best  parts  available,
The  pre-amplifier  improved  based on  famous  Wada  Shigeho's  Style  Electric  circuit, which  was  Introduced  by Wada  Shigeho  in the  early  1960s  and gave  an  excellent  performance.
Regarding  the Wada  Shigeho's  Style  Electric  circuit, it not  only  still  keep the  good  features  of  Marantz7,meanwhile  it have  superrior  features  in  Dynamic, High/Low  Frequency  Response,  Resolution  and  Signal  to Noise  Ratio as  compared  to  Marantz7.But  apart  from  above  features,  it’s  also not  inferior  to  Marantz7  in Sound  stage  and airy  feeling. Adopt  4 PCS  paper in  oil  capacitors  and  German  WIMA  capacitors  for  coupling  effect, make  the  sound  warm and  delicate.


Product characteristics :
The reference of 
Wada  Shigeho's circuit to improve lines and adjust according to the different uses of the bile duct peripheral component parameters to maximize the strengths of the bile duct , so that the machine can no matter what the outstanding performance of the bile duct . Japanese and Shigeru launched in the early 1960s, the performance is excellent. It maintained a Marantz7 mellow and full of musical taste characteristics, but regardless dynamic , transient, high frequency response , power analysis , signal to noise ratio than Marantz7 good , and in the sound field , transparent flu and Marantz7 enough to keep pace .

  • Size : 430 × 90 × 290mm
  • Input impedance : 100K;
  • Output impedance : 600 ohms
  • Output max volatage: 15v
  • SNR : 90dB;
  • Frequency Response : 10Hz - 30KHz;
  • Distortion : ≤ 1%.
  • Input Power :    AC100V-AC240V available 60Hz/50Hz
  • Output Tube :    12AT7×2, 12AU7×2, 6Z4×2,  1x decoration 9pin tube
  • Input Sensitivity :    400m
  • Humidity :    35%—80%
  • TMD :    less than 0.01%
  • Input Jack :    4 groups
  • Output Jack :    2 groups(same voltage), you can connect double same amplifiers
  • Net weight : 8.5kg, 
  • Package size weight : 11.8kg
  • Colors: Black or Silver front panel to choose



By (Toulouse, South Africa) on 28 March 2017 (XiangSheng 728A Tube Pre-Amplifier HIFI EXQUIS Famous Japanese Cuircuit 12AT7 12AU7 6Z4 Pre-amps with tones adjustables) :

high end preamp

Отличный усилитель, потрясающий звук, точно соответствует описанию, реально звучит как гораздо более дорогой. Смело берите, не пожалеете. Доставка J-NET до Забайкальска, далее передача ПЭК и дальнейшая отправка в Краснодар, немного долго , 33 дня от оплаты до получения, но в целом хорошо, главное что не почта России. Отличный продавец ,всегда оперативно отвечал на запросы.

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