Hi,
For anyone who remembers Bryston's newsletter commented on here not all that long ago, "Dan Agnanos Speaks Up On Amplifier Design" Volume 9 issue 1.... which I and I believe others interpreted as being heavily skewed and/or highly misinformed regarding class d amplifiers.. I thought it would be amusing to post this gem which I just tripped over.
I'm more amused that it occured long before the above article was discovered and reprinted by them, namely Volume 7, Issue 4.
http://www.bryston.ca/newsletters/74_files/vol7is4.html
It starts off with Bryston commentary:
"About Digital (Class D) Amps
About once a week I get a question regarding Digital Amplifiers and where Bryston is going with this technology.
The following article was written recently by Bruno Putzeys - Chief Engineer at Phillips Class D Audio Systems Laboratory. PLEASE read it - it is VERY GOOD. It explains where digital technology is and what the future holds for this technology"
Followed with a short article by Bruno, and finishes up with pure ignorance from Bryston along the lines of :
"So you can see that the so called superiority of Class D amplifier technology has been greatly exaggerated. Good old well designed ‘linear’ analogue amplifiers (of which Bryston represents the best available) are here to stay. Class D amplifiers with their open loop digital pulse width generator exhibit all the attendant disadvantages of Class D designs namely, poor frequency response linearity, high noise and sensitivity to power supply ripple.
Class D designs certainly have a place in sound reinforcement, 70 volt applications, mass produced mid-fi products like receivers and subwoofers where low cost, low weight and high efficiency is required but if State of The Art sound is what your after - not so fast! At Bryston we are constantly looking and searching for better ways to build audio amplifiers and we have and will continue to evaluate and test these Class D designs (or any other technology that comes along for that matter). Distinctive from Class D amplifiers, all Bryston SST Series amplifiers have low noise, low output impedance and vanishingly low THD that is constant with frequency. Bryston will continue to research in the direction that gives our customers the most accurate audio amplifier performance available. "
I find it hard to believe they're stupid enough to not know that the analog class d amplifier from the very guy they thought wrote such a fine article doesn't at all fit the description which they chose to depict, and continue on to say how they test everything they can find to bring their customers the best etc. This is obviously a deliberate effort to deceive... much like their 20 year warranty does the same.
What a shame they don't believe in their product enough to be able to stand behind it without having to put down competing technologies in such a deceptive fashion.
For anyone who remembers Bryston's newsletter commented on here not all that long ago, "Dan Agnanos Speaks Up On Amplifier Design" Volume 9 issue 1.... which I and I believe others interpreted as being heavily skewed and/or highly misinformed regarding class d amplifiers.. I thought it would be amusing to post this gem which I just tripped over.
I'm more amused that it occured long before the above article was discovered and reprinted by them, namely Volume 7, Issue 4.
http://www.bryston.ca/newsletters/74_files/vol7is4.html
It starts off with Bryston commentary:
"About Digital (Class D) Amps
About once a week I get a question regarding Digital Amplifiers and where Bryston is going with this technology.
The following article was written recently by Bruno Putzeys - Chief Engineer at Phillips Class D Audio Systems Laboratory. PLEASE read it - it is VERY GOOD. It explains where digital technology is and what the future holds for this technology"
Followed with a short article by Bruno, and finishes up with pure ignorance from Bryston along the lines of :
"So you can see that the so called superiority of Class D amplifier technology has been greatly exaggerated. Good old well designed ‘linear’ analogue amplifiers (of which Bryston represents the best available) are here to stay. Class D amplifiers with their open loop digital pulse width generator exhibit all the attendant disadvantages of Class D designs namely, poor frequency response linearity, high noise and sensitivity to power supply ripple.
Class D designs certainly have a place in sound reinforcement, 70 volt applications, mass produced mid-fi products like receivers and subwoofers where low cost, low weight and high efficiency is required but if State of The Art sound is what your after - not so fast! At Bryston we are constantly looking and searching for better ways to build audio amplifiers and we have and will continue to evaluate and test these Class D designs (or any other technology that comes along for that matter). Distinctive from Class D amplifiers, all Bryston SST Series amplifiers have low noise, low output impedance and vanishingly low THD that is constant with frequency. Bryston will continue to research in the direction that gives our customers the most accurate audio amplifier performance available. "
I find it hard to believe they're stupid enough to not know that the analog class d amplifier from the very guy they thought wrote such a fine article doesn't at all fit the description which they chose to depict, and continue on to say how they test everything they can find to bring their customers the best etc. This is obviously a deliberate effort to deceive... much like their 20 year warranty does the same.
What a shame they don't believe in their product enough to be able to stand behind it without having to put down competing technologies in such a deceptive fashion.
Class D designs certainly have a place in sound reinforcement,
Bryston will have its place in history ..... 😉
Regards
Charles
Remark: don't ask me how I managed to post like that .........
yeah, and BJT's too. 🙄
I'd agree there's a market for them, but I don't think they're doing themselves any favors twisting things in order to make themselves appear more favorable. Poor tactic... no class..... no class at all.
I'd agree there's a market for them, but I don't think they're doing themselves any favors twisting things in order to make themselves appear more favorable. Poor tactic... no class..... no class at all.
It's just marketing. And as we all know, that might as well come from a different planet. As an interested observer, I think all manufacturers and evangelists for different technologies are equally as guilty.
That's true. I guess I'm disappointed that I fell into their marketing trap in the past.. thinking they were worth a damn 😀
I think the difference between manufacturers of valave amps and Bryston is that the former already know that they belong to a niche market.
Do not missunderstand me: This is not a bad thing at all but the Bryston article and the way they missuse a cited article clearly shows some arrogance.
Regards
Charles
Do not missunderstand me: This is not a bad thing at all but the Bryston article and the way they missuse a cited article clearly shows some arrogance.
Regards
Charles
Well said. In the least it's a serious lack of professional integrity. If they were the company they pretend to be that should never be allowed to happen. If that were my company I'd be truly ashamed of that. I didn't even see them having the guts to sign a name to that.
Anyways, That's what happen when someone with limited experience was not able to get to work a class d amplifier!
Fredos
www.d-amp.com
Fredos
www.d-amp.com
Probably non so foolish... ever seen a smoked Bryston? I have. They donated an amp to the school I went to, it didn't last 2 months... Bryston didn't want to look at it to figure out what happened.
Slapping a 20 year warranty doesn't make it bullet proof, it just means if you keep replacing it for 20 years you won't get a bad rep.
Slapping a 20 year warranty doesn't make it bullet proof, it just means if you keep replacing it for 20 years you won't get a bad rep.
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