Sources for linear power supply for EMU 0404 USB
garylkoh, thanks for your response. I had previously read about switching to a linear power supply. I think maybe on computeraudiophile. Can't access that now. I think the poster specified a URL for a model sold on PartsExpress that he used successfully. But I think he had to make his own connector for the EMU 0404 USB. Do you have any suggestions for where to purchase a linear power supply, hopefully without having to fabricate my own connector? Or failing that, directions for such fabrication. I am old enough to know how to solder. That's pretty old - lol.
The version of my EMU 0404 USB was probably an updated version, since I was initially unhappy with the way the Main Output level knob tracked volume. EMU, aka Creative, replaced the whole unit (including wall wart) with one that reflected engineeering changes. Even the wall wart was different. If necessary, I can dig behind all the wiring and get what is written on the wall wart I use now.
Lastly, do we have any 'objective' testing that quantitatively shows the 'improvements' and under what conditions this is audible. I enjoy the sound I hear now, and is some respects that is the ultimate test!
Thanks for your efforts, especially recommendations for an audio server setup. My thinking is that the world has come full circle. Computers hardware benefits from 'sharing'. But that can cause audio anomalies, since most OS cannot guarantee that a time sensitive audio thread will not be interrupted by Bill Gates', or other vendors, greatest needs. BUT hardware costs keep coming down. Even Microsoft has announced a 4x4 inch board with i3/i5 USB etc to compete with the $30 Raspberry Pi. I believe there is an opportunity to use dedicated single threaded computers for time critical audio playback. I know that the JRivers of the world will claim that the 'turtle speed of audio needs' NEVER competes with multi-threaded multi-applications of a 3GHz computer. But anyone who has seen the hour glass knows that is a lie. It is very hard to even track all the things a modern computer is doing with such its complex interrupt structure. Dedicated application hardware at less than $100 is IMHO the way to go. Perhaps one 'Task Manager' board which issues 'start a particular application command', with parameters of what to play, may very well become the new architecture. Even that centralized command structure may become an unneeded complication, as the audio-computer and needed storage is built inside the audio volume knob!
+1
And, it has a pretty decent ADC built-in as well. One real cheap upgrade to the 0404 is to buy a linear power supply instead of the switched-mode wall wart that comes with it. It'll sound smoother and less fatiguing. I bought mine off eBay for less than $10 - a wall-wart that weighs almost a pound!