So asking for a rationale is "knocking down"? People are free to like whatever they want - I was just wondering if there is a rationale, apart from aesthetics.
If you say so. I would fire the designer of that CD player.
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Review and Measurements of Purifi 1ET400A Amplifier
- Thread starter amirm
- Start date
So asking for a rationale is "knocking down"? People are free to like whatever they want - I was just wondering if there is a rationale, apart from aesthetics.
If you say so. I would fire the designer of that CD player.
You obviously are just forming opinions without actually experimenting or listening to anything. Thus no need to waste time with further discussion.
You seem to jump to conclusions without any information, so yes, please do not waste our time with further speculation.
You fit the definition of internet troll.
Takes one to know one. I am actually interested in facts, doesn't seem like you do.
Typical audiophiles will pay 2-3 times more for a component they think looks good and looks expensive; the people who post here aren’t typical audiophiles. Manufacturers are well aware of this, and purposely design in bling so they can sell the same internal box for much more money.Ah, yes. I read a fair bit of that thread, and I still couldn't figure out what makes a case "audiophile"
The ex head founder of Musical Fidelity said that through traditional retail distribution channels, the retail price of high end stuff with good looks - heavy machined case, expensive knobs -was as much as 70% due to cosmetics.
If someone claimed that painting his formerly blue car red improved the 1/4 mile time, but doesn't offer any actual valid data to support it (just his assertion and possibly some gobbledygook about wavelengths and effective masses of photons and pigment particles), you might do best to smile, back away, and remember to never take his opinions about that sort of thing seriously.
Or you could paint your car red, take data, and wonder why the hell your 1/4 mile time didn't change.
Personally, I'd go with the former, and think anyone who did the latter was something of an idiot.
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Hi Lab!
Are there any measurements that show the gear performed differently? Or is this just an opinion?
However hard this is to accept . Once we know or we see or "know, we are biased. I have witnessed my audiophile friends mistaking a CD playing for the TT. I had turned both on and simply dropped the needle on an LP but it was the CD system playing. They all heard the warmth of analog ....... from the CD! They thought it was the TT playing....
Have you tried yourself ? Can you reliably distinguish, blind and Level-matched, AAC high Rate or mp3 320 kbps from original uncompressed .wav? Some here can, most of us blissfully can't. We, the majority thought for years that we could hear differences, even those between cables, too; once we subjected ourselves to a small degree of rigor we, painfully, then blissfully accepted, even embraced our failings ...
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The problem is that it isn’t really free to try every scheme that supposedly makes a difference. It takes time, and sometimes a lot of money. So it is completely reasonable, when someone puts forth an idea that makes little sense and can’t be measured, to ask for proof. If the difference were strictly audible, or measurable, anyone with a high margin product to sell would be throwing blind tests and measurements at you. Instead, most of the time they condescend, argue to authority, anger, invent pseudo-scientific reasons or invoke quantum uncertainty, and question basic scientific method.
I view that fact pattern as an indication that there is no strictly audible or measurable difference.
You could borrow a term from critical theory (which I think is mostly bollocks, btw). Call it Audiophile Fragility-characterized by a hysterically defensive reaction to requests for measurements or controlled evidence.
I view that fact pattern as an indication that there is no strictly audible or measurable difference.
You could borrow a term from critical theory (which I think is mostly bollocks, btw). Call it Audiophile Fragility-characterized by a hysterically defensive reaction to requests for measurements or controlled evidence.
What about the SMPS1200 ? The SMPS600's transformer and inductor appeared to be cooking.
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What about the SMPS1200 ? The SMPS600's transformer and inductor appeared to be cooking.
As mentioned I havent measured them, but I havent noticed them as being particularly hot.
One thing to bear in mind is that whilst not ideal, those components shouldnt have significant issues with high temperatures.
@Bruno Putzeys could you please share with us the THD+N x power graphs of the 1ET400A, in 8, 4 and 2 ohms, with the typical 100Hz, 1kHz and 6.67kHz colored lines? Thanks in advance!
I think I have them hang on.@Bruno Putzeys could you please share with us the THD+N x power graphs of the 1ET400A, in 8, 4 and 2 ohms, with the typical 100Hz, 1kHz and 6.67kHz colored lines? Thanks in advance!
Struggling to copy the plot as I'm on a tablet but essentially the distortion is flat across the range. At 100 watts thd is circa - 120dB
https://www.purifi-audio.com/eigentakt/
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maty
Major Contributor
Hypex NC500, from the PDF
@Bruno Putzeys , Can you give us some information about this amp's ability and performance in bridged mode (if it can be bridged) ?
Thanks a lot, you made my day!
maty
Major Contributor
Hypex NC1200, from the PDF
Hi @amirm , I think the first "without" should be "with" in your original post.
BTW, thanks for testing this board.
"You get full power with as little as 1.5 volt without the extra gain but need 11+ volts without it. "
Also FWIW, in Bruno's interview, I think he stated 9 Volts for full output.
"... So you can drive them with one output that delivers the full 9Vrms swing to one input and tie the other input to your source’s ground reference, or you can use two outputs that each deliver 4.5Vrms in opposite phase, or anything in-between for that matter. It’s the same: volts is volts, and it’s measured strictly between the input pins. ..."
Interview Questions with Bruno and Lars
BTW, thanks for testing this board.
"You get full power with as little as 1.5 volt with
Also FWIW, in Bruno's interview, I think he stated 9 Volts for full output.
"... So you can drive them with one output that delivers the full 9Vrms swing to one input and tie the other input to your source’s ground reference, or you can use two outputs that each deliver 4.5Vrms in opposite phase, or anything in-between for that matter. It’s the same: volts is volts, and it’s measured strictly between the input pins. ..."
Interview Questions with Bruno and Lars
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