Oldchen Röhrenverstärker (Laochen)

OldChen 300B HIFI Single-ended Class A Tube Amplifier Upgrade Version 274B and CVS181-SE 100% original factory and brand new Parameters: Pre-amp tubes: 2 x PSVANE CV181-SE Rectifier tube: 1 x PSVANE 274B Power tubes: 2 x PSVANE made "special customize for Laochen 300B-SE" power tube  Output power : 9Wx2,   Power transformer Power: 150W Frequency response: 20Hz-25KHz Output Impedance: 4 ohm, 8 ohm Total Harmonic Distortion: ≤ 1% (1kHz) Input Impedance: 100K ohm Input...

LaoChen 845 Tube Amplifier HIFI Single-Ended Class A 300B 6SN7 Driver Flagship Lamp Amp 100% original factory and brand new If your speakers and audio source are very good, you have a higher level of pursuit for the sound quality of the machine and the sound level of the tube. You can upgrade the PSVANE tube 6SN7-SE*2, 300B-SEN*2, 845SEC*2. Standard version  option is With PSVANE HIFI Seire 2x 845,     2x  6SN7 and 2x PSVANE special made  300B-SE   : Luxury...

  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. 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...

​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,   Basic technical parameters: Rectifier :  1x 5u4c (5z4p,5z3p,5u4g,5r4g) Preamp tubes : 1x 6H8c (6n8p, 6sn7) Power tubes : 2x P SVANE HIFI Serie EL34-B ,   Red or Black seat (depens production periode) Rated output...

Features and parameters of this machine: 1. With the direct amplification function of ordinary bile preamp, and adding a moderate high and low tone adjustment, you can adjust the tone according to your preferences, and you can make the details of the music more clear and listening at a low volume. Regardless of whether it is equipped with a tube amplifier or a stone machine, it can both polish and enhance the strength of high frequency resolution and low frequency and the overall dynamic range....

Performance parameters: Output power: 9W × 2 (RMS 8Ω) Frequency response: 20Hz--20KHz Total harmonic distortion: <1% (1kHz) Input sensitivity: 500mV--2000mV Input impedance: 100KΩ Output impedance: 4Ω, 8Ω Signal to noise ratio: 80dB Volume (W × D × H): 430 (W) × 230 (D) × 130 (H) mm Package weight: 10Kg Electron tubes: Russia 6H8C × 2, Dawn 6P6P × 4, Dawn 5Z2P ​