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  • Description

    Boyuu A20 KT88 Tube Amplifier HIFI KT-88  Amplifier Single-ended 6550 Lamp Integred Amp


    With all tubes option: is with 2 x KT88 power tube and 2x preamp tube and a rectifier tube

    Without any tube option:  is the version wihtout any tube
    A20 architecture is inspirit the USA WE 91 with one level amplification circuit, with chinese 6J8P for voltage amplification, it can be replaced by 6SJ7 or many other samelly tube,  and the power tube can use direclty with KT88 tube tube without any modification, so we have 3 version to choose

    Basic technical parameters:


    •     Tubes:   Rectifier tube: 1 x  5Z3PAT, high level rectifier tube
                        Voltage tubes: 2 x 6J8P(Equivalent 6SJ7, 6SJ7GT, CV591,CV592,  6Ж8) , 
                        Power tubes:  2 x PSVANE or Shuguang KT88, Please contact us if you want some special tube 

    •     Power transformer :  0.35mm/60MM 114*60,  
    •     Output transformers:   0.35mm 86*50,
    •     Output power: 18Wx2(Ultra- linear connection)
    •     Frequency response: 20Hz--35KHz
    •     Output Impedance: 4ohms - 8ohms
    •     Total Harmonic Distortion: ≤ 1% (1kHz)
    •     Input Impedance: 100KΩ (3 input )
    •     Input Sensitivity: 750mV
    •     SNR: 89dB
    •     Input voltage: 220-240v 50/60hz
    •     Supply transformer Power: 150W
    •     Size (W × D × H): 360mm × 300mm × 185mm
    •     Net weight: 16.5 kg net

    Product technology and materials 

    •     Power and output transformers use Booyu's best transformers  
    •     Gold plate connection for all connections
    •     Double CLC filter inductors for rectifier tube
    •     Double chassis design  2.4mm, very high resistant up to 70kg loading
    • ​    The transformers steel are all imported from japon Z11 0.35mm


    BOYUU is specially manufacturer for HIFI Transformers, It export to Japan or others countries, and one of leader market chinese brand of transformer  , then it’s why the BOYUU’s amplifier transformers are better than others and its tube amps can give a better sound.


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Boyuu A20 KT88 Tube Amplifier

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