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XiangSheng D-2020 KT88 6550 EL34 FU50 Tube Push-Pull Amp HIFI EXQUIS Music Curve D2020 Integrated Amplifier LX version

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New product

XiangSheng

For bluetooth 5.0 connection Option, thank you to purchase Bleutooth module in accessory part

More details

$813.40

$980.00

-17%

  • KT88 Tubes
  • EL34 Power Tube
  • With 6550 Power Tube

Tube option:
EL34 Version: the power tube is EL34, (replace power tube is EL34, 6CA7, KT66, 6L6),
KT88  Version: the power tube is KT88-98 , (replace power tube is KT88, 6550, KT90),
6550 Version: the power tube is 6550 , (replace power tube is KT100, KT88, KT90),
FU50 Version: the power tube is FU50 ,  (replace power tube is Russian GU-50 or Germany LS-50 ),
 
BT option :
With BT: the amplifier with adopt a bluetooth 5.0 connection, you can use it to connect your phone to play music
NO BT: the amplifier is withou bluetooth connection, you need use connect it with RCA classic way to get sound signal
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Technical parameters:
● Output Power per channel: 20w/EL34, 30w/KT88, 35w/fu50 ( only with triode connection mode)
● Frequency response: 20Hz~30kHz ±1db
● Total harmonic distortion: < 1% (1kHz)
● Input sensitivity: 500mV
● Input impedance: 100KΩ
● Output impedance for speakers: 4Ω - 8Ω
● Signal to noise ratio: 89dB
● Preamp Tube: 12AT7(ECC81)×2(center position for R1 and L1), 12AU7(ECC82)×2(side for R2 and L2), 6N6T×2(longer side for R3 and L3)
● Rectifier: 2×5u4g (upgrade to Linlai 5u4g new tube, better than default 5z3p)
● Power tube: 6550B/KT88/EL34-B/FU-50 (depens options )
● Volume (width × height × depth): 460 × 180 × 360mm
● Net Weight: about 23Kg
 
Feature:
● using PCB inside design;
● The power supply cattle and output cattle are made of imported high-grade silicon steel sheets and layered
inter-stage winding technology. Power burdock steel: 114mm × stack thickness 60mm, output burdock steel: 96mm × stack thickness 40mm. High quality nylon skeleton, high purity oxygen free copper wire.
● Using WIMA red MKP polypropylene capacitive coupling.
● Use carbon film resistors. Although the error and thermal noise of the carbon film resistor are slightly larger than the resistance of the metal film, everyone recognizes that the sound of the carbon film is warmer. The actual thermal noise carbon film is also almost indistinguishable from the gold film. Considering the warm tone, the default printed circuit board model of this machine uses carbon film resistors, and the scaffolding welding machine uses military Dahongpao gold film resistors and carbon film mixed.
● Rectifier part, high voltage adopts secondary rectification technology, 5Z3P×2 bile rectification, 4 high quality large ponds and 2 inductive filters.
●Refer to the classic line improvement, 12AT7×2 voltage amplification, 12AU7×2 inversion, 6N6×2 cathode output push, push-pull AB amplification. The frequency response is wider, the phase shift is smaller, and the fidelity is higher.
● Transformers are processed by potting methods commonly used by most manufacturers to provide insulation, moisture, shock absorption, etc., which can greatly reduce the magnetic coupling through the chassis, reduce resonance and reduce noise.

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PCB inside design:

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