Size: 88mm*60mm
Note: 1pcs board is mono channel. Two-channel stereo need 2 pcs
Supply voltage: DC ±24V to ±50V (transformer Double 18V~Double 35V)
Signal Amplification Tube: Brand New Net Import ON (OnSome) MPSA56 MPSA06
Voltage Amplifier / Push Tube: ON (On Semiconductor) MJE340/MJE350
Last stage big tube: pure import Japan T'oshiba origin K851 (200V 30A)
Input coupling: West Germany ERO 1813 10UF/100V
Power Decoupling: Japan C'hemicals
Conversion rate: 33V/us (oscilloscope ramp time when reading square wave critical deformation)
Distortion: 1KHZ 0.007% 10KHZ 0.026%
Frequency response: 20HZ~22KHZ -1DB
Output impedance: 4 ohms to 8 ohms (not less than 4 ohms)
Output power: ±55V 8OHM: 125W ,4Ohm: 250W (Power supply is ideal)
K851 (200V/30A), T'oshiba old audio dedicated tube, positive temperature coefficient characteristics, with strong thrust, low frequency does not exist foot soft (negative temperature coefficient tube low frequency will be soft)
Field effect tube:
Has a very high input impedance voltage control device. Its characteristics are similar to those of electron tubes. Power amplifiers made with field tubes are known for their warmth, sweetness and softness. Buffs are called bile amps.
Such a good device, you can let it buried. I produce a number of amplifiers and it is my responsibility to recommend them to fans.
Study a variety of well-known field tube amps, in order to play the unique charm of the field tube, this version uses quasi-complementary design, (Ming and Tianlong and other famous machines are used) quasi-complementary can retain rich even harmonic components, so that a sense of hearing quite Soft, full, delicate. This version of the test process, no matter how loud the volume is opened, do not feel noisy people, the low frequency band of this board is flexible and rich, it is really intoxicating. It is indeed a long time to hear. (It's best to listen to the big temperature)