@guidocorona
Class D, as analog as it has been, was always the bastard design.
Many, many thanks to Guido to lending his splendid ears to critic the prototypes Oganesson amps line from Merrill Audio and also his generosity with excellent suggestions which some of which have been implemented.
There are a few items with Class D and switching frequency is not one of them. Although the GaN transistors allow for faster switching, it is really all the removal of dead time, overshoot, and ring that has resulted in the exquisite nature of the GaN amps. Switching at a higher frequency only introduces more problems then it solves.
I have a thread introducing the ELEMENT 118 Power amplifiers on tour. Feel free to take your best Class A amp or any other amp to compare with the ELEMENT 118. Currently you can do that at distinctivestereo.com in New Jersey, or HearEverything.nl in Europe or audiogenese.fr in France. More sites to come in the US.
As noted earlier, issues with prior Class D was deadtime, overshoot, ring, and to add to that the heavy use of feedback to reduce distortion.
With the ELEMENT 118 Power Amplifiers and the Oganesson line of amps, the dead time is zero. (Trivia: Oganesson is the ELEMENT 118 in the periodic table).
That means no dead time at all. This takes any argument away from Class D whatsoever.
The rest is design - reducing overshoot and ring means designing the circuits and PCB to bring the parasitic inductance and capacitance to a point where it has no or very little influence on the board.
Finally the last piece of magic in the ELEMENT 118 Power amplifiers is that it has zero feedback - it is an open loop design. This frees up the system much like an open baffle speaker system does to speakers.
We are shipping in limited quantities so you can look for reviews coming.
But why read about anything about Class D when you can hear it for yourself and compare it directly with your amps. This is an open invitation to anyone who can travel to NJ. I hope to have more sites soon.
Hope that helps the Class D conversation.
A bit more on GaN Transistors. They are fast, allow great switching, limited to a few vendors like TI etc. However put a Bugatti in the hands of a neophyte and you still cannot win any races. GaN Transistors in itself, while providing the technology to finally make Class D the best, still requires a whole lot of design challenges behind it. But yes, it is the future.
Class D, as analog as it has been, was always the bastard design.
Many, many thanks to Guido to lending his splendid ears to critic the prototypes Oganesson amps line from Merrill Audio and also his generosity with excellent suggestions which some of which have been implemented.
There are a few items with Class D and switching frequency is not one of them. Although the GaN transistors allow for faster switching, it is really all the removal of dead time, overshoot, and ring that has resulted in the exquisite nature of the GaN amps. Switching at a higher frequency only introduces more problems then it solves.
I have a thread introducing the ELEMENT 118 Power amplifiers on tour. Feel free to take your best Class A amp or any other amp to compare with the ELEMENT 118. Currently you can do that at distinctivestereo.com in New Jersey, or HearEverything.nl in Europe or audiogenese.fr in France. More sites to come in the US.
As noted earlier, issues with prior Class D was deadtime, overshoot, ring, and to add to that the heavy use of feedback to reduce distortion.
With the ELEMENT 118 Power Amplifiers and the Oganesson line of amps, the dead time is zero. (Trivia: Oganesson is the ELEMENT 118 in the periodic table).
That means no dead time at all. This takes any argument away from Class D whatsoever.
The rest is design - reducing overshoot and ring means designing the circuits and PCB to bring the parasitic inductance and capacitance to a point where it has no or very little influence on the board.
Finally the last piece of magic in the ELEMENT 118 Power amplifiers is that it has zero feedback - it is an open loop design. This frees up the system much like an open baffle speaker system does to speakers.
We are shipping in limited quantities so you can look for reviews coming.
But why read about anything about Class D when you can hear it for yourself and compare it directly with your amps. This is an open invitation to anyone who can travel to NJ. I hope to have more sites soon.
Hope that helps the Class D conversation.
A bit more on GaN Transistors. They are fast, allow great switching, limited to a few vendors like TI etc. However put a Bugatti in the hands of a neophyte and you still cannot win any races. GaN Transistors in itself, while providing the technology to finally make Class D the best, still requires a whole lot of design challenges behind it. But yes, it is the future.