Laochen EL34 Single-ended Tube Amplifier HIFI EXQUIS AIQIN Class A handmade lamp amp Silver version OCEL34S OldChen

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OldChen (Aiqin Tube Art)

Luxury version use better electronic component, (please find the detail in product description)
Standard version use standard electronic component, 
Bluetooth Luxury version use same component than Luxury version, in additional add the Bluetooth module, than you can connect your phone to play the music

More details




  • With all tubes
  • Without tubes
  • Standard version
  • Luxury version
  • Bluetooth Luxury version

  Manufactuer "LaoChen" have 3 brands name: "Oldchen" , "LaoChen", "Aiqin"     

So for this product, we have some amplifier  maybe  come with "Oldchen" words on the front plate , and others come with "LaoChen"  , please pay attention,  


Technical parameters:

  • Rectifier : Upgrade to new special oldchen 5U4G(New) 
  • preamp tubes : Upgrade Russian 6H9c ×2(NOS)
  • Power tubes : PSVANE HIFI serie EL34-B × 2, (New, Black seat)
  • Rated output power: Ultra-linear connection 10Wx2(default and recommand mode by manufacturer),  triode connection 8Wx2, standard connection 12Wx2,   tell us if you want to change the default connection mode. 
  • Frequency response : 20Hz - 25KHz (HIFI EXQUIS 1101017)
  • Total power consumption: 115W
  • Power transformer: 160w, (96x50) 
  • Output transformers: 15w x 2, import Japanese Z11 0.35mm(66x45), very important to Provide sufficient power
  • Total Harmonic Distortion : 1% (1kHz) (HIFI EXQUIS 1101017)
  • Input Sensitivity : 500mV - 2000mV
  • Input impedance : 100KΩ
  • Output Impedance : 4Ω, 6Ω8Ω, with about 10-100w 88db(>=) speakers  
  • SNR : 88dB (HIFI EXQUIS 1101017)
  • Dimensions (W × H × D ): 380 × 160 × 230mm
  • Net Weight: about 9kg (HIFI EXQUIS 1101017)
  • Input voltage: 110v-240v 50/60hz for worldwide
  • HIFI EXQUIS offer US, EU or AU standard power cable


Standart version features:  

  • Taiwan ShuangLian's potentiometer, Nice quality potentionmeter
  • All tubes is military level NOS tube or New tube,
    Rectifier and voltage tube are Seventies Class J military level tube
  • Special HIFI levels capacitors
      German WIMA red grade fever no electrodes capacitance

      Cathode capacitance: Philips audio-specific,
  • All high-precision metal film resistors rings
  • CLC filter inductor
  • Powoer output transformer is Handmade 
  • Optimized routing and Extremely low noise,  (HIFI EXQUIS 1101017)
  • Gold plate connection for all connections

For Luxury version use more high level's HIFI components like:

  • Teflon silver plated wire partially used in main path in the machine
  • ALPS's Exponential potentiometer
  • Top HIFI levels capacitors:
  •   Using BHC, Philips, RIFA or Ruby Filter capacitor.  (HIFI EXQUIS 1101017 store)
  •   Using USA CE,CDET or TRW Coupling capacitor
  •   Using RIFA,SPRAGUE, Philips or Mallory Cathode capacitanc
  • Containing silver Solderin

She is made by the most famous Chinese brand LaoChen, and it's the China 's best-selling hifi tube amplifier!

Since 2006, it has been sold more than 10,000 copies!

LaoChen is well-known brand in china,   this EL34 series is already sold more 10 milles copies, it‘s the most popular tube amps,  it's used for 100w around HIFI Speakers to all music type and special for vocal chords music.
This amps's development and marketing time has more than 10 years, it has been very mature, has received a lot of suggestions for improvement by hifi buyers, many buyers have been praised .

Real sense of hearing:

  • Bass is surging strong. ( HIFI EXQUIS1101017)
  • Middle frequency is soft and mellow voice,
  • High frequency is crisp and clear.  ( HIFI EXQUIS 1101017)
  • Even used to listen to the POP or dance music can be shocking endless,
  • Bounce efforts  andclear resolution makes the sound never tired.
  • Thousands of people are full of praise for this amplifier in manufacturer's site



There are always "Aiqin" words on some below photo,  but it's not longer to use it for new amp 

This tube protection cover is not included in the main product, if you want to buy it, please order it,  we can send this tube protection cover with your tube amplifier by same package. 

If you are looking for the tubes protection cover, please click the following photo: 


The is the inside components and architecture view of LaoChen luxury version:

The is the inside components and architecture view of LaoChen standard version:


With Bluetooth version is with bluetooth 4.0, the receiver antenna is on the side of amplifier:

The Bluetooth component is like in below image: 

HIFI EXQUIS(1101017) use double package to ship this amplifier:


By (Hanoi, Vietnam) on 21 March 2018 (Laochen EL34 Single-ended Tube Amplifier HIFI EXQUIS AIQIN Class A handmade lamp amp Silver version OCEL34S OldChen) :
The customer has rated the product but has not posted a review, or the review is pending moderation
By (Kampen, Netherlands) on 20 Jan. 2018 (Laochen EL34 Single-ended Tube Amplifier HIFI EXQUIS AIQIN Class A handmade lamp amp Silver version OCEL34S OldChen) :

Great sound

For such a cheap tube amplifier the sound is amazingly good.

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By (Aguilar de Campoo, Spain) on 28 March 2017 (Laochen EL34 Single-ended Tube Amplifier HIFI EXQUIS AIQIN Class A handmade lamp amp Silver version OCEL34S OldChen) :

top el34 tube amp

Very fast delivey, excellent quality and perfect tubes - thank you!!!

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Laochen EL34 Amp User Manual

Laochen EL34 Tube Amp User Manual English Version

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