Theme Settings

Mode Layout
Theme color
Choose your colors
Background Color:


Boyuu A9 EL34 Tube Amplifier HIFI EXQUIS Finished Single-Ended Integraed 6SN7 lamp Assembled amp

 Be fan

Be fan of our Facebook page and get $5.00 discount!

 Be fan

If you are not logged in to Facebook, please first log in and then refresh this page before clicking the Like button. Otherwise, you will not get your voucher.

Customer ratings and reviews

1 rating(s)
View distribution

New product


A​ll versions include tubes, but no tube cover,  you migh find cover in accessories part

More details




  • Standard version
  • Upgrade version

All versions include tubes
For the upgraded version with a cover option: the amplifier features larger output transformers (76x40), enhancing the sound quality for large dynamic music. This option includes a tube cover, and you can view the picture at the end of the page.
For the upgrade without a cover option: the amplifier also includes larger output transformers (76x40) for improved sound quality with large dynamic music. However, this option does not come with a tube cover.


For the standard version with a cover option: the finished amplifier includes all tubes and features smaller output transformers (66x36). This option comes with a tube cover, and you can view the picture at the end of the page.
For the standard version without a cover option: it is a complete amplifier with all tubes included. The output transformers are smaller in size (66x36), and this option does not include a tube cover.

The manufacturer "Boyuu" frequently utilizes different brand names such as "Boyuurange," "Reisong," "Boyuu," or "Tube." Consequently, the brand name printed on the front panel may vary across different product periods. Please be aware of this, and if you have any inquiries about the brand, feel free to contact us for more detailed information before making a purchase.


  • Power transformer: using imported 0.35 core, clean enough, several complex vacuum impregnation.

  • Chassis: professional design, the surface has no screws.

  • Output transformer: stretching of the outer potting garment, potting moisture-proof treatment.

  • Power supply parts: 315V + 315V full wave high voltage double rectifier tube, the use of imported iron core as power inductors, camp-type power supply filtering, ruby power supply filtering.

  • Larger parts: use the classic Japan sun lines, each channel uses two three common CRT parallel amplification with high output voltage, the drive current is large and other characteristics, full-speed voice, treble transparent, smooth.

  • The preamp tube was changed to 6J8P (equivalent 6SJ7)  tube,  

Material parameters:

  • Power transformer: using 96-60 large power 200W power core design power, imported high flux silicon thick steel 0.35.Oxygen-free copper enamel wire using domestic manufacturers in tight layers, with a characteristic of very low load current, no vibration, no hum.

  • Output transformer: divided into tightly wound segments, using Japanese pure wood ultra-thin electrical insulation paper (thickness of only 0.06MM, withstand voltage 2000V).

  • Capacity: Imported fever capacitors filter (Netherlands, Philippines, Japan ELNA, Japan Ruby, etc.).Coupling using the Netherlands Philip toned special quality audio capacitors, elegant transparent sound.

  • Dimensions: width 315 depth 280 height 155

  • 96-60 power transformer.200w, use 0.35mm iron plate

  • Epoxy potting dedicated audio output transformer, with high insulation0.06MMPaper, 2000V insulation

  • Hand welding of scaffolding.

Technical Specification:

  • Output power: 12W * 2 (ultra-linear connection).

  • Frequency response: 20Hz - 28KHz.

  • Output impedance: 4.8 omega.

  • Total harmonic distortion: 1% (1kHz).

  • Input sensitivity: 750MV.

  • Input Impedance: 100KOmega (two input signals)

  • Dimensions (W times D times H): 310 times 268 times 165mm.

  • SNR: 88dB.

  • Pramp tube: 6J8P x 2( Equivalent 6SJ7)

  • Power tube: EL34 x 2. (PSVANE or Shuguang , depend the production period)

  • Rectifier: Chinese 5Z3P x1(equivalent by 5u4, 5r4g, 274B, 5z3p)

  • Power transformers: 0.35, stacked thick 60MM (96-60).

  • Output transformer core: new imported dedicated 0.35 audio.

  • Speaker outputs: high level export oriented plugs, with transparent banana inputs

  • Input voltage: 110v-120v or 220v- 240v 50 / 60hz

  • For DIY SET option, We can offer english DIY manual after when you made order

The back panel view :


The inside view of the architecture:
More photo for DIY set:
Nex picture show the tube cover:
Praise from customers:


By on 23 Sept. 2017 (Boyuu A9 EL34 Tube Amplifier HIFI EXQUIS Finished Single-Ended Integraed 6SN7 lamp Assembled amp) :
The customer has rated the product but has not posted a review, or the review is pending moderation

Viewed products