Just want to jump in with a quick update to let everyone know that this is still top priority over here - we haven't forgotten about anyone and are still on it. I'm sure other interface manufacturers are doing the same.
As some others stated earlier, it turns out that the Fusion/SSD/HDD theory was likely a red herring, or at least some separate issue. The issue we're dealing with causes a degradation of the signal into distortion, and occasionally dropouts or software glitches. This is a USB issue currently affecting many makes and models of USB audio interfaces on these newest (late 2013, "Haswell") computers
only.
The severity of the problem seems to be related to the number of channels that the audio interface utilizes. A one or two channel interface like the JAM/MiC/ONE works fine, things start to get funky with multi-channel devices like Quartet (12-in, 8-out), and Symphony I/O connected through USB (16-in, 16-out) is currently not working.
We have had varying degrees of success connecting through the Thunderbolt port using hubs - it helps in some cases, but not all. As you can see from my post four weeks ago, we thought this might be a viable workaround, but further testing (and Trock's firsthand experience) shows that it is not always the case.
Symphony I/O + ThunderBridge is still rock-solid on these computers, since it's using PCIe audio, not USB. Same with a Symphony 64 PCIe card + chassis. If you're a Symphony I/O user, that's the only bulletproof solution we have so far.
Quote:
Originally Posted by
xgman
So the 2012 imacs don't have this issue at all?
This is correct, only the newest gen with the Haswell processors. I'm actually using a 2012 iMac with Quartet at home and it's 100%.
Quote:
Originally Posted by
trock
i have been down a good 2 months, and reverted to my N12 on old macbook pro for now.
Probably a silly question, but there's no chance you could connect the Symphony to that Macbook Pro? Symphony just needs 10.6.8 and an Intel processor for USB mode.