Laochen 300B Tube Amplifier HIFI EXQUIS Single-ended Class A Handmade OldChen Amp Black Version

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OldChen (Aiqin Tube Art)

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,  

More details




  • With all tubes
  • Without tubes
  • With Bluetooth version
  • Without Bluetooth

With All Tubes option is with all tube

Bluetooth With Tube version is with all tube and Bluetooth module ,

Without Any Tube version is without any tube and nor Bluetooth module

The brand name changed to "Oldchen", it's always the same manufacturer than Aiqin



  • Voltage tubes: 2 x Special customize SHUGANG or Russian 6SN7/6N8P/6H8C 
  • Rectifier tube: 1 x Special customize SHUGANG  made 5Z3PA/5U4G
  • Power tubes: 2 x PSVANE special customize for Aiqin version 300B-SE 
  • Output power : 8Wx2,  
  • Power transformer Power: 150W
  • Frequency response: 15Hz-35KHz
  • Output Impedance: 4 ohm, 8 ohm
  • Total Harmonic Distortion: ≤ 1% (1kHz)
  • Input Impedance: 100K ohm
  • Input Sensitivity: 500mV--2000mV
  • SNR: 88db
  • Size (W × D × H): 370mm × 250mm × 220mm
  • Net weight: 16 kg
  • Tube protection grille 3kg
  • Chassis Color: Black Version 
  • Input voltage: costomize for 110-240V/50-60hz


  • Psvane UK version 300B give you a best vocal and very fine sound effect.
  • Using SPRAGUE,  TRW, CE, MALLORY special audio capacitors in the machin
  • Output transformer: 86*50, 0.35mm Z11 Japanese steel with OFC wires
  • Powoer transformer: it is also use 0.35mm steel with OFC wires
  • Gold plate connection for all connections
  • 3 inputs source with swither
  • Free offer tubes protection grille
  • All electronic component are high level quality
  • Aiqin's 300B tube amps are already one of leader of chinese market
  • AIQIN is well-known brand in china, this 300B tube amplifier is sold a few hundred per month. Since 2006, its EL34 series is already sold more 10milles copies.
  • She is made by the most famous Chinese brand AIQIN, and it's the China 's best-selling hifi tube amplifier!
  • 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 



Double package:

HIFI EXQUIS free offer you next tube protection grille(you don't need to purchase it):

Upgrade all tubes view(please find all upgrade tube in acceorires part):

By (Aguilar de Campoo, Spain) on 28 March 2017 (Laochen 300B Tube Amplifier HIFI EXQUIS Single-ended Class A Handmade OldChen Amp Black Version) :

Big power

I order this amp for fullrange speaker. Just tried to connet this amp to BMW 800D and SP100R2 VINTAGE. I was surprised that i heard the sound this amp drive BMW 800D and SP100R2 VINTAGE. This is just small(8W+8W) amp but this one have huge ability.

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