[LAU] Focusrite Scarlett 18i8

[James Stone]

On Wed, Jan 8, 2014 at 9:34 AM, Tim Goetze <tim at quitte.de> wrote:
> [Jeremy Jongepier]
>>Thanks for the info Robin, I was about to acquire a Scarlett 2i4 but I
>>guess I need to look for other options.
>
> I'd like to add that the 2i4 seems to be pretty much incapable of
> useable low-latency operation in some situations.  Even with buffer
> sizes in the tens to hundreds of milliseconds it produces frequent
> clicks on the same system that runs a UCG-102 at 3x48/48k with no
> problems, a Thinkpad with an Intel chipset, 3.12.5-rt7.

I've done some testing with my 2i4, and I think I have found a similar
problem. However, it appears to be due to something in the kernel
rather than the device. With my current kernel (3.11.0-14-lowlatency),
U can't go below 128/2 @ 48k without getting nasty distortions of
sound (which are basically like the sound shearing, but might be a bit
clicky under certain circumstances).

However, I fired up AVLinux, and I can go down to 32/2 @ 48k without
this problem. I then tried a generic 3.0.36 kernel on my Ubuntu Studio
setup, and although performance isn't that great (bit sensitive to
moving windows etc. to cause xruns), I can get down to 32/2 @ 48k
without any audible clicks or sound distortions..

Might be worth testing?

James