Kerry Posted August 16, 2021 Report Share Posted August 16, 2021 I had to pause this project for a bit, but I'm picking it back up now. I've had issues with some of the batteries I've been testing. I'm going to try and get a clean set and test with my current 3S balancer as well as a stock (ebay) 3S battery protection circuit. 4 Quote Link to comment Share on other sites More sharing options...
Kung Posted January 7, 2022 Report Share Posted January 7, 2022 I saw a portable estat amplifier on a Chinese e-commerce platform and it looks very similar to kevin's amplifier, Is this the commercial version ? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted January 7, 2022 Author Report Share Posted January 7, 2022 nope, not mine but may be close. definitely want more information. Quote Link to comment Share on other sites More sharing options...
Kung Posted January 7, 2022 Report Share Posted January 7, 2022 Here are more pictures of PCBs that may be an early version. They look identical in terms of layout. Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted January 7, 2022 Author Report Share Posted January 7, 2022 that looks very close to my design. no surprise i guess. 1 Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 11, 2022 Report Share Posted January 11, 2022 KUNG Who r u？ Why copy my picture to this forum? Quote Link to comment Share on other sites More sharing options...
joehpj Posted January 12, 2022 Report Share Posted January 12, 2022 Why not? 3 Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 12, 2022 Report Share Posted January 12, 2022 57 minutes ago, joehpj said: 何乐而不为？ Because in my Country there is no good business model only destroyed each other Quote Link to comment Share on other sites More sharing options...
nopants Posted January 12, 2022 Report Share Posted January 12, 2022 Can't tell if you're justifying stealing the design or getting mad that you got exposed, maybe it's both 4 Quote Link to comment Share on other sites More sharing options...
JoaMat Posted January 12, 2022 Report Share Posted January 12, 2022 5 hours ago, HS918 said: Because in my Country there is no good business model only destroyed each other Vilket land är det? ¿Qué país es? Which country is it? 是哪个国家? Quote Link to comment Share on other sites More sharing options...
JoaMat Posted January 12, 2022 Report Share Posted January 12, 2022 (edited) By the way... I have been made aware of that the mini T2 is marketed by a company unknown to me. They want $ 7,000 for it. It is an example of a villain's business model. Edited January 12, 2022 by JoaMat 2 3 Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 15 hours ago, nopants said: Can't tell if you're justifying stealing the design or getting mad that you got exposed, maybe it's both NOT decoding from power DAC to amplifier is completely my design😑 10 hours ago, JoaMat said: Vilket land är det? 是哪个国家？ 是哪个国家？ 是哪个国家? CN 中国 Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 10 hours ago, JoaMat said: The fact is that my estat amplifier expects sales prices for a $ 400 for only $ 400 for CNC processing and other costs. The price is quite low. Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 This is the latest design might look similar to Stax-D10 but the fact is different. Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 Kevin Gilmore also said that Stax D10 is a D class amplifier, I design a Class A amplifier expects to have better sounds. I hope so that🤔 Quote Link to comment Share on other sites More sharing options...
JoaMat Posted January 13, 2022 Report Share Posted January 13, 2022 @HVRV Please, Never ever make any changes within a quote. I urge you to make appropriate changes in your earlier posts. Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 8 minutes ago, JoaMat said: @HVRV Please, Never ever make any changes within a quote. I urge you to make appropriate changes in your earlier posts. My English level is limited, I don't understand what you mean, do you say not to change the price? Always keep the price of $ 400? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted January 13, 2022 Author Report Share Posted January 13, 2022 1 hour ago, HVRV said: Kevin Gilmore also said that Stax D10 is a D class amplifier, I design a Class A amplifier expects to have better sounds. I hope so that🤔 Absolutely not. Stax D10 uses apex high voltage opamps and is class a/B with limited voltage swing. other amplifiers out there use class D amp driving transformers. birgir has a couple of them. they suck. If your amplifier is indeed $400 then i want to buy one NOW. Since the design is virtually identical to my design there is no reason for me to build one when i can buy yours. 1 Quote Link to comment Share on other sites More sharing options...
chinsettawong Posted January 13, 2022 Report Share Posted January 13, 2022 I’ll buy one now too. Quote Link to comment Share on other sites More sharing options...
JoaMat Posted January 13, 2022 Report Share Posted January 13, 2022 @HVRV, When you quote someone’s post it will appear in your post marked with the members name and time of the post in its own “window”. In that window you can’t make any changes. You have quoted me and written something I haven’t said. I don’t like that. Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 1 hour ago, kevin gilmore said: Absolutely not. Stax D10 uses apex high voltage opamps and is class a/B with limited voltage swing. other amplifiers out there use class D amp driving transformers. birgir has a couple of them. they suck. If your amplifier is indeed $400 then i want to buy one NOW. Since the design is virtually identical to my design there is no reason for me to build one when i can buy yours. In my country. A representing the formation is the push-pull design and D represents digital circuits such as op amp. In addition, I don't know how to mail my product to other countries. If you have a better way I am willing to provide my products after the Chinese New Year's Day I can determine that my product does not contain taxes and freights, stabilizing in $ 400👐 47 minutes ago, JoaMat said: @HVRV, When you quote someone’s post it will appear in your post marked with the members name and time of the post in its own “window”. In that window you can’t make any changes. You have quoted me and written something I haven’t said. I don’t like that. Ok, I will pay attention to this problem. Quote Link to comment Share on other sites More sharing options...
judo Posted January 13, 2022 Report Share Posted January 13, 2022 In any country who thinks opamp is a digital circuit can not steal anybody's design. You could be the merchant. If so, I am going to buy an amp from you too. 2 Quote Link to comment Share on other sites More sharing options...
HVRV Posted January 13, 2022 Report Share Posted January 13, 2022 13 minutes ago, judo said: In any country who thinks opamp is a digital circuit can not steal anybody's design. You could be the merchant. If so, I am going to buy an amp from you too. If you want to buy my amp I suggest you better find a Chinese friend to help you buy Quote Link to comment Share on other sites More sharing options...
judo Posted January 13, 2022 Report Share Posted January 13, 2022 3 minutes ago, HVRV said: If you want to buy my amp I suggest you better find a Chinese friend to help you buy So China is the country, what a surprise... Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted January 13, 2022 Author Report Share Posted January 13, 2022 here is my original schematic from january 2021. there are minor changes in the production version. Might as well let everyone steal it. electrostatportable.pdf 1 1 Quote Link to comment Share on other sites More sharing options...
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