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In Reply to: RE: If he had the class d design skills of Bruno Putseys, he might be offering one... posted by Garg0yle on September 22, 2015 at 05:49:33
Putseys started designing and building tube amps. He has moved on with spectacular success.
Pass' products are all ss as far as I know. He once tried a class d amp but couldn't get it to perform well.
And yes, building a class d amp is not hard. Building a good one is. Just ask those who have tried.
try it! you know you want to!
Follow Ups:
Well maybe you know more about Putseys then is public record?"Early life
He graduated cum laude at the National Technical School for Radio and Film on the subject of power stages for switching audio amplifiers. Worked for 10 years at the Philips Applied Technologies Lab in Leuven, Belgium, where he developed various digitally and analogue controlled class D amplifiers, noise shapers and modulation methods, and invented among others the "UcD" class D circuit."
"Career
In 2005 he left Philips to divide his time between Grimm Audio and Hypex. Current activities include designing high-performance discrete AD/DA converters and analogue signal processing circuits, DSP algorithms, class D power amplifiers and switch-mode power supplies. He holds several patents in the fields of digital audio and power conversion and has published extensively in these and related domains."
It doesn't say anything about tube amps...
△ᴉʇɐuᴉɯnllI oᴉpn∀△
Edits: 09/22/15
Here's one
He dabbled briefly as a teenager.
Well, you got me.
I guess Putzey has the same pedigree as hundreds of others over at DIYAudio after-all.
△ᴉʇɐuᴉɯnllI oᴉpn∀△
the section about his music collection:
"Along another wall in the living room are shelves with an eclectic mix of a couple of hundred CDs..."
Makes perfect sense that analog and high resolution are absent.
How many CD's in your collection ..... ?
along with another 600 vinyl and several dozen high rez albums.
I have heard the Grimm active speaker system now several times here in Switzerland and each time it is totally clear and precise and STERILE and UNmusical like hell. I can't stand more than a few minutes in the room with such an utterly unmusical "mr. Spock" like sound. Grimm indeed...
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