Poultrygeist
Lunatic Member
Class D of a few years ago is not the same as it is today. The technology is advancing so rapidly that you don't want to get stuck with an older implementation.
Anyone tried a Class D amp running GaN outputs? I haven't heard it but apparently, its a significant improvement in audio quality, extremely low background noise, wide frequency range with very low dropouts, etc.
Let us know when you kind a clone.I think GaN Class D amps are not widely available as yet. I too am awaiting the affordable clones. It looks to be an interesting development.
Their biggest challenge is the significant amount of ultrasonic switching noise present in the signal. Do those outputs allow for higher frequency switching?Anyone tried a Class D amp running GaN outputs? I haven't heard it but apparently, its a significant improvement in audio quality, extremely low background noise, wide frequency range with very low dropouts, etc.
Right now the class D amps being built using the new IceEdge 1200as2 modules, such as Mivera and Nord, have captured a lot of attention. People are selling their high priced AB amps, Pass et al after hearing these.
A new one that looks very interesting from Nuprime-
A new input stage with a 1MΩ input impedance.
700KHz high-speed switching Class-D module
http://nuprimeaudio.com/product/evolution-one/?v=7516fd43adaa
I think you'll be waiting a long time for that.and we'll be able to afford them when the Chinese introduce their clones
But using oem TI production, afaik.We'll see. With the Texas Instrument TPA's it only took a few months.
https://www.bizjournals.com/dallas/...t-5-things-texas-instruments-is-doing-in.htmlIs that because TI is making them in China and thus Chinese clones are actually 'the real thing' off the assembly line 'the real thing' was made on?
Class D Amps and Switch Mode Power Supplies work in almost a similar manner. Both can only function by employing very high ultrasonic frequencies ... that introduce noise. Has anyone tried to power a Cass D amp with Linear Power Supply? I figure that with this setup, the power supply part will not have any ultrasonic noise (effectively, half of the noise will not even be generated at all). The inductors after the output stage only needs to filter out a much lower "quantity" of ultrasonic noise, resulting in a cleaner output. The downside is that the larger size of the Linear Power Supply would just take up more space. Any thoughts?
From this point onwards, I tend to believe that Cass D amps will develop rapidly to a stage where they would eventually trounce the CLass AB or Class A amps in all aspects of audio quality. Clones from the East would also become available rather rapidly. It would appear that we are sitting on the cusp of a Class D invasion !!!