I have an Emu1616m so I am guessing the drivers will be similar (if not the same).
You should try to get the proper EMU drivers to work before you start messing with asio4all.
So, you ask which drivers to use… You must have a installation CD which came with the soundcard right? All the drivers will be on there.
Do you have EMU ASIO selected as the driver in Renoise?
If so, and you are still getting crackles you need to look at the latency settings.
Get the info together and post back on here and I will see what I can suggest. Tell me what driver you have selected, and what the latency setting is.
Also, do you get the PatchMix software with EMU0404?
Ok I have just checked the EMU site and it seems you dont get any DSP effects with the USB version, so you will not get PatchMix software. This rules out any issues concerning DSP and PatchMix.
First thing, try increasing the latency and tell me if that fixes it. The standard technique is to set the latency at something huge like 1000ms and then slowly reduce it until you hear crackles. Then set it slightly above the crackle level.
What do you mean official Win drivers? Your card is a pretty decent specialist audio card. Use the drivers that come with it, and ignore all the bullshit windows tells you about the drivers being unsigned…
I first got clicks and pops which turned into badly distorted sound before the sound vanished fully. For me the solution was to store the audio tracks on an external USB drive. I also tried with a USB memory stick which works fine too. I think Cubase recommends using a drive of its own for audio but I did not think this was the problem as the internal sound card played back the files ok with Cubase Essential 5.