1pair Yundi A30 home HI-FI audiophile class A high-power after-stage field-effect amplifier finished board super 1969

 

【Name】Field effect tube pure class A amplifier finished board

【Model】A30

【Brand】Yundee

【Size】99mm×53mm×2 (mono PCB size)

【Content】2 finished boards

【Scope of application】Small HIFI amplifier Multi-channel amplifier

 

Technical parameters：

Maximum output power: Class A and B 50W/8 ohms 90W/4 ohms

Maximum class A power: 30W

Maximum supply voltage: + -33V

Harmonic distortion: <0.01% 10W/8 ohms

Frequency response: 5Hz-100KHz

Damping factor: >100

Signal-to-noise ratio: >96dB

Conversion rate: >15V/uS

Input impedance: 33.2K

Gain: 31dB (34x)

 

The board has been soldered and tested intact delivery (for the convenience of installation, power tubes are not welded), only need to adjust the quiescent current according to the actual use of the situation (no adjustment can also work normally).

The actual effect of good tone, frequency band is very wide, rich in detail, low-frequency dive and high-frequency extension excellent, both rich and powerful low frequency, but also the field tube unique crystal clear highs.

 

Package：

1 pair of Yundi A30 home HI-FI audiophile class A high-power after-stage field-effect amplifier finished board super 1969


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