The WCF pure bile amp kit is similar to the so-called gallstone all-in-one cheap amp toy that uses a few dollars, a 6N1, 6N3, 6J1 and a transistor on TAOBAO. The design. The effect, the materials and the price are obviously different. The cost may be relatively high, but after the sound is turned on, you will feel that it is refreshing and different.
Different guts, different prices, and big differences in tone. The modified kit is suitable for high-impedance headphones(64-600 Euro)
The input impedance of the electronic tube is high, and the grounding of the box is necessary, so that the interference noise can be shielded
The kit is 78 yuan , does not contain the tube and potentiometer, all American DALE resistance
According to your own budget, you can choose different tube solutions, one solution is 6N6*2 plus 6N11, the price of the tube is 130 yuan, and the other is the Soviet Union 6H6NX2+Czech ECC88, the price is 170
Supporting all-aluminum tube amp chassis 108 yuan
http://item.taobao.com/item.htm?spm=0.0.0.0.CufiKM&id=19121686836
This kit is a spare part, and it needs to be welded to add 30 yuan to the finished product.
The following is the rendering of the whole machine:
Before the release, three solutions were made. The first one is 6N6 cathode parallel output, where the whole frequency band is not outstanding. The second solution uses the EMS EMP output mode of the SRPP mode, and the original machine also needs to be 7K large yuan. Under the promotion of HD600, the sound is gorgeous, but the low resistance is dim, and the distortion is obvious. The output internal resistance of this method is relatively large.
The third solution is WCF, Class A working state, with relatively low output internal resistance, which can drive 64-1200 ohm headphones(64-600 Euro recommended).The circuit has no large loop feedback, no need for compensation capacitors, three-point balanced tone, sweet, smooth and natural tone.
If you think that the bravery is just warm and there are not many details, then you are wrong. Its details are stronger than most op amps, good circuit, good bravery, natural and good tone
The circuit is debugging-free, and the production is super simple, because the design is reasonable, the noise is very low, and there is no DC impact on the switch.
The use of voltage requires 2 sets, one set is filament AC6.3V (1A-2A) & ;nbsp; 1 group is AC 180V--230V
PCB size: 131X98MM The spacing between the potentiometer and the earplug is 45MM
Optional transformer
http://item.taobao.com/item.htm?spm=0.0.0.0.XPlXcG&id=21040299501