LaoChen K3 KT88 Push-Pull Tube Amplifier HIFI EXQUIS AIQIN 45Wx2 Class A handmade Scaffolding amp OCK3 OldChen

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New product

OldChen (Aiqin Tube Art)

Manufactuer "LaoChen" have 2 brands name: "Oldchen" , "LaoChen"
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,  

More details




  • With all tubes
  • Without tubes
  • With cv181 pre-amp tubes
  • With Bluetooth version
  • Without Bluetooth

Bluetooth with tubes option :  


The version without bluetooth but with All Tubes :

CV181 pre-amp tube version:


Performance parameters:

  • Output Power: 45W x 2 (RMS 8Ω)
  • Frequency response: 18Hz - 35KHz
  • Total harmonic distortion: <1% (1kHz)
  • Input Sensitivity: 500mV - 2000mV
  • Input Impedance: 100KΩ
  • Output Impedance: 4Ω, 8Ω
  • SNR: 88dB, (HIFI EXQUIS 1101017)
  • Dimensions (W x D x H): 370 (W) x 280 (D) x 180 (H) mm
  • Weight: 20Kg
  • Preamp tubes: Shuguang 6N8P × 3, power tube: PSVANE KT88 × 4
  • Input voltage: 110/120v or 220/230v, two versions availables


  • KT88-K3 tube amp use high power 400W 114*70 power transformer
  • 0.35 96 * 50 imported japan Z11 output transformer,
  • Handmade interior scaffolding welding,
  • Simple circuit neat, (HIFI EXQUIS 1101017)
  • 3 inputs sources can be switch on front panel
  • Almost no background noise
  • ALPS potentiometer(HIFI EXQUIS 1101017)
  • Get the maximum degree of sophistication and kt88 features sound with basis taking into account the dynamics and power on(HIFI EXQUIS 1101017)
  • KT88 power truly reflects the push-pull tube amps majestic momentum
  • Electronic component quality quarantee by Laochen(HIFI EXQUIS 1101017)
  • new Laochen push-pull tube amp since 2014 November 
  • 4 PSVANE power tube quarantee the very stable and nice kt88 tube acoustic features.
  • Biase value can be changed inside of amplifier
  • Bluetooth option can connect your mobile device easily, Put the source swith on AUX position, connect your Bluetooth device to use it, and disconnected the device if you want return to use RCA input 




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

The tube cover is include:


1: Signal Inputs ,  2: Speakers left channel jack,  3:Speakers right channel jack,  4: power input and Fuse

Biase value can be changed inside of amplifier:k3-inside

HIFI EXQUIS use double package to ship this amps:

She is made by the most famous Chinese brand Oldchen(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 or 300B series are already sold more 10milles 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 .

You can upgrade the default 3x6n8p pre-amp tube by PSVANE classic version CV181 TII level pre-amp tube,  find it in the accessoire part

By (South Molton, United Kingdom) on 24 Apr. 2018 (LaoChen K3 KT88 Push-Pull Tube Amplifier HIFI EXQUIS AIQIN 45Wx2 Class A handmade Scaffolding amp OCK3 OldChen) :

Nice amp.

Good amp, Well packed.
Really excellent communcation.
Safe company to deal with.

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