LaoChen K1 KT88 tube amplifier HIFI EXQUIS AIQIN OCK1 handmade scaffolding Audio amp OldChen

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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


Now the printed brand name was changed to "Oldchen" by manufactuer, but it's always the same manufacturer than "Aiqin"



Basic technical parameters:


  •   Tubes:  1 x Shuguang 5Z3PA rectifier 
  •                2 x Shuguang 6N8P(6sn7) preamp tubes
  •                2 x PSVANE KT88  power tubes(KT88 tubes garentie 6 months)
  • Power transformer :  105*60 0.35mm steel with OFC wires
  • Output transformer:   86*40 0.35mm Japanese Z11 steel with OFC wires
  • Output power: 15Wx2
  • Frequency response: 20Hz-25KHz
  • Output Impedance: 4 ohm, 8 ohm
  • Total Harmonic Distortion: ≤ 1% (1kHz)
  • Input Impedance: 100K ohm
  • Input Sensitivity: 500mV--2000mV
  • SNR: 88dB
  • Supply transformer Power: 150W
  • Size (W × D × H): 370mm × 240mm × 180mm
  • Net weight: 15 kg 
  • Thick double packaged 17.5 kg
  • Input voltage: 110v-240v  50/60hz


Product technology and materials  

  • Using SPRAGUE or TRW or CE or MALLORY special HIFI audio capacitors
  • Powoer output transformer is quranty by AIQIN brand
  • Gold plate connection for all connections
  • Swith input source
  • Teflon silver plated wire partially used in main path in the machine
  • Containing silver soldering
  • Handmade scaffoldin
  • CLC filter inductor for rectifier tube

Oldchen(AIQIN) is well-known brand in china, this KT88-k1 tube amplifier is new update version by one year research approved by everyone, it's a top selling tube amplifier in china,  its EL34 series is already sold more 10milles copies.







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





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