Not after the time put into the Purifi project, it's just starting to fire, and to scrap it and do a total redesign, that's suicidal 🚑 better to bag out the newcomer.
Cheers George
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GaN was around a long time before Bruno started at purifi. He's been working on self oscillating amplifiers for decades now so if a technology had come along that would make a difference do you really think he would not have chosen it to differentiate Purifi from Hypex?
Only really in Evaluation Boards we got some MkI and MkIIs'. Not much chop low power but nice sounding, and as it was, just really for evaluation.
Then the Peachtree started with them, but only lately without bridging them, in these two all digital to the output stage, no feedback, of the new GaN-1 and Carina GaN.
Cheers George
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That statement doesn't make any sense at all. If Bruno ever comes to the conclusion hat GaN would give any real advantage then he will use it. Going form Si to GaN is a muuuuuuuch simpler step than designing a clever high-order feedbak loop.
Regards
Charles
Founder of AGD claims that he has the only supply of GaN devices developed from ground up to be used for audio, which he bought out when he left that tech company. So who knows, maybe AGD GaN's are "better" than all those other GaN's? He sure seems to want to charge way more price for them.
Not with what it takes to re-tool/design up and the costs from what he's just using now and making inroads on Hypex to try to dominate with?
Cheers George
Once a design is done with multi layered boards and smd components and you tooled up for it and gearup to manufacture it, re-tooling the whole thing is massive in time as well as the costs, doesn't matter how big you are, get over it.
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I'm not sure what you think are the differences involve but, apart from that in my example below the pinout is different (might exits equal ones - I spent 2 minutes checking these components) and apparently more capacitance to handle according to Bruno - these are both transistors - one is 4x more expensive... just an example... as you don't seem to be so versed in electronics.... given your description in the opening post I mean... not a revolution design or production wise at all - multilayer or/and smd - dosen't matter these days...
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Sounds a little like my Zoudio amplifier...with 10X less than the already below audibility THD. Looks like someone has "caught up" to the idea of an internal "processor chip to convert PCM to PWM".
We need multiple channels, each with its own DSP filter - user assignable in every parameter. Give me six channels, I'll take 'em.
A board respin is a couple of weeks. As long as you have the components modern CAD/CAM tools are pretty amazing. Purifi are amazingly good at simulations as well.
I would also note that Lars Risbo was a good chunk of the brains behind the Tact Millenium which did the 'powerdac' think well at the time of the millenium. These guys are seriously clever.
New digital front end,
DSP chip,
Zero feedback,
new output stage.
Sure walk in the park redesign🤦♂️.
DSP chip,
Zero feedback,
new output stage.
Sure walk in the park redesign🤦♂️.
New digital front end, - Not needed as purifi amplifier is analog, but Bruno more or less wrote the book on PCM to PWM conversion (see Mola Mola) and Lars did it 25 years ago.
DSP chip, - Not needed as analog amplifier
Zero feedback, - So what? why is that better other than marketing
new output stage.- It's a transistor.output I am sure between them they could work out how to put GaN in if they wanted to. But it has not advantage for their application. Clearly some people go 'ooh new shiny' though.
DSP chip, - Not needed as analog amplifier
Zero feedback, - So what? why is that better other than marketing
new output stage.- It's a transistor.output I am sure between them they could work out how to put GaN in if they wanted to. But it has not advantage for their application. Clearly some people go 'ooh new shiny' though.
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