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OldChen 845 Tube Amplifier HIFI EXQUIS LaoChen Single-Ended Class A 300B 6SN7 driver Lamp Amp

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Best-selling 845 Tube Amplifier in Our Store

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  • Standard version
  • Luxury version

Luxury version: option is with all best specially oldchen customized PSVANE made Carbonized anode plate, golden pins tubes:  2x PSVANE 845-SEC Carbonized Black glass,  2x PSVANE Eggplant shaped 300B-SEN,  2x
customized PSVANE Bottle shaped CV181-SE:


Standard version option is With PSVANE HIFI Seire 2x 845 ,2x PSVANE 6SN7GT and 2x PSVANE special customized made carbonized anode plate 300B-SE:



Oldchen, a significant high cost performance brand in the tube amplifier industry, has established a positive partnership with PSVANE. This collaboration allows Oldchen to incorporate the latest optimal tubes from PSVANE into their amplifiers. In the case of this specific amplifier, all tubes are newly manufactured by PSVANE, offering exceptional value and sufficient quality to create a warm tube sound.


  • Preamp tubes: 2 x 6SN7GT or CV181-SE(depend on option)

  • Driver tube:  2x 300-SE or 300-SEN(depend on option)

  • Power tubes: 2 x 845 or 845-SEC (depend on option)

  • Output power : 25Wx2 (8 ohms),

  • Power transformer Power: 150W

  • Frequency response: 18Hz-35KHz

  • Output Impedance: 4 - 8 ohm

  • Total Harmonic Distortion: ≤ 1% (1kHz)

  • Input Impedance: 100K ohms

  • Input Sensitivity: 500mV--2000mV

  • SNR: 87db

  • Size (W × D × H): 430(W)×340(D)×280(H)mm

  • Net weight: 27 kg

  • Package weight: 30Kg

  • Input voltage for: AC50-60hz /110-120v, 220v  230v-240V


  • Since 2 years preparation and testing , Laochen in the end release their latest flagship big power 845 tube amplifier(HIFI EXQUIS)

  • Use one high voltage transformer and one lower voltage transformer, 2 x power transformers independently supply amp, in order to ensure amplifier's power at the same time reduce the interference, in the absence of output feedback, the noise is controled within 1-1.5 millivolt, making the sound of the amplifier more broadly natural.

  • Using custom 6SN7 preamplifier, (HIFI EXQUIS)

  • PSVANE 300B-SE to drive PSVANE 845 high-power bile duct drive output transformer,

  • Between 300B and 845 is with stable efficient hi-fi coupling capacitors

  • Use of metal film resistors, ALPS potentiometer and hi-fi level capacitors,

  • signal amplification part use handmade point to point and PCB mixed design to reduce the noise, and make more flexibility

  • The power supply part use thickened circuit board.(HIFI EXQUIS)

  • use for each high voltage and low voltage two inductance for filtering,

  • Use a delay of 30 seconds of the circuit, effectively protecting the life of the power tube.

  • Taiwan's high-quality dual-head dynamic VU meter,

  • Direct thermal triode 845 amp, both the performance of human voice and natural string and delicate, and also when dynamic time it's calm and magnificent,

  • Gold-plated connectors(HIFI EXQUIS)

  • 3 inputs source with swither(HIFI EXQUIS)

  • Free offer tubes protection grille(HIFI EXQUIS)

  • All electronic component are high level quality

  • Manufactuer Laochen is most famous Chinese brand, they have 3 brands: "Oldchen" , "LaoChen", "Aiqin" ,  its EL34 series is already sold more 20000 copies.

  • HIFI-EXQUIS made a special English version user manual for this device, please ask us the download link once after you made an order.


S​tandard version:



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