Hello!
I am thinking about buying one of the A60 boards (or perhaps a GB150D amplifier board..). Now there are 2 versions on aliexpress, this blue one with v 1.0 inscription on it(priced at 60 Euros) and another one with v1.1 inscription(priced at 120Euros). Does anyone know why is that big difference? Does the cheaper version function well? Which one A60 should I buy? Or should I buy the GB150D board? Please share your thoughts...Thanks in advance!
I am thinking about buying one of the A60 boards (or perhaps a GB150D amplifier board..). Now there are 2 versions on aliexpress, this blue one with v 1.0 inscription on it(priced at 60 Euros) and another one with v1.1 inscription(priced at 120Euros). Does anyone know why is that big difference? Does the cheaper version function well? Which one A60 should I buy? Or should I buy the GB150D board? Please share your thoughts...Thanks in advance!
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After the supplier with the original 1943/5200 disappeared, I decided to buy transistors from the Chinese company Jilin Sino-Microelectronics for a new project. The results of the measurements were a pleasant surprise. According to the datasheet, they are as close to the original as possible. If anyone has used these, please write. Judging by the description about the company, they should be no worse.16 pairs of the same 43 batch, 4 pairs of 46 and 49, which is normal for me.Gain 106 and 116 respectively.
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Jilin Sino-Microelectronics Co., Ltd. (JSMC), a hi-tech enterprise, is mainly engaged in designing, manufacturing and marketing of semiconductor devices. Benefited from decades of innovation and upgrade, JSMC ranks as one of the top 5 semiconductor device companies inChinaand is certified as postdoctoral workstation and innovative enterprise by both Ministry of Science and Technology and Chinese Academy of Sciences.
these are better than most of them aftermarket 5200/1943, get grade "C" it's better binned part of them.
many of people here in India using them these days , and they work well.
I have been using them personally since 2023, and they don't cost much 1.2-2USD/pair as you buy more , price get lower
I have used them in my project like P3A and JAT801
https://youtube.com/clip/UgkxjwsBTIEdGWvn9-AfYiiwGlD5lMObpvwz?si=HgiXK9n2hrbR6EyV
here is a video link , in the video you can see the die itself is bigger than other 5200/1943 and known Original
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After watching this video, I decided to buy them and not fakes.😉
Hi I don't remember which voltage to use for a Accuphase Clone. Would a 2 x 36 Vac transformer be ok?
I have 70 authentic pairs. boxerica209@hotmail.com
Hi I don't remember which voltage to use for a Accuphase Clone. Would a 2 x 36 Vac transformer be ok?
OK Multiply the transformer output voltage by 1.4. This will be the output of the rectifier.
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In Russia, Korean KEC can only be ordered in batches starting from $3,000. Why do I need this?😏
Unfortunately, if we Russians buy from you, it will be much more expensive than buying from China. The shipping will probably be at the price of the product, if not more expensive.😴
This is new information for me. I can get it from Profusionplc.
That will be 50 Vdc Approximately will that be ok?
( I got the Alzheimers ) To much stress in my life.
In the description of the manufacturer of black boards, the voltage of the transformer is AC24Vx2-AC42Vx2. So everything is normal with you. Do not forget about the operating voltage of the capacitors. The higher the power supply, the higher their nominal voltage.The blue boards have NOVER 10000x50 capacitors, so the description says maximum AC32Vx2.
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