Pure gall bladder designed with fever concept(Bile rectification)The headphone amplifier board can be used as a HIFI pre-stage, and the effect is very good! ! !
Machine link address:http://item.taobao.com/item.htm?id=524437493927
Matching transformer link:https://item.taobao.com/item.htm?id=553884397559
Inductance link address:https://item.taobao.com/item.htm?id=546750607709(It is recommended to configure an inductor, the noise will be smaller)
【Performance characteristics】:
6C19 is used as cathode output, with low output impedance, low internal resistance and strong load capacity. Therefore, good results can be achieved by pushing all kinds of headphones! As for 6S6, 6N1, and 6N6, if you use capacitors for output, you have to stand aside. Comparable to 6C19 is also 6N5P(6080)Similar.
1. The electronic tube filament uses 3.15V-0-3.15V AC power supply, which makes the sound quality more attractive. At the same time, the bottom noise of the whole machine is only weak 4MV, which is a manifestation of the designer''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s profound skill.
2. Frequency response range: 20HZ-20KHZ
3. Signal-to-noise ratio: 98DB
4. Support any earphone with impedance above 16 ohm!
5. Installation method: the electron tube protrudes out of the chassis for installation.
【Reference circuit】: Some original parameters have been modified, subject to the actual product.
【Machine materials】:
1. Standard electronic tube: rectifier tube Soviet OTK 5U4C(The picture is Sugon 5Z4P, which can be directly replaced, the standard configuration is 5U4C Amplifier tube: Beijing 6N4-J(The front tube can be directly replaced with 12AT7, 12AX7, 12AU7), Beijing 6C19 two. Strong guts, mellow voice, toughness and elasticity!
2. High-quality Hong Kong TE MKP film capacitors are connected in parallel with Japanese Rubycon Ruby capacitors as output coupling capacitors. Inter-stage coupling capacitors still use Hong Kong TE MKP film capacitors and South Korea''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s SAMWHA Sanhe capacitors as filter capacitors.
3. All low-power resistors adopt domestic precision metal film copper foot resistors, with high signal-to-noise ratio, good stability and high precision. The high-power cathode resistor adopts aluminum shell resistor.
4. Adopting Japanese ALPS 16 potentiometer, no noise of other brand potentiometers, long life and durable.
5. The PCB is 1.6MM thick double-sided board, thick copper plate, size 170MM*120MM. The design strictly follows the one-point grounding principle, the wiring layout in the box is reasonable and organized, the power line and the signal line do not overlap, effectively reducing the probability of mutual interference!
6. Blue LED lights are installed at the bottom of 6C19 and 6N4, which makes the booting effect very beautiful at night. Yongsheng headphone socket.