HELP my DAC/Amp. won't work after updating OS X

See my post on page 2 here:

problem with usb audio in el capitan

I just bought a £2k new MacBook Pro for audio USB recording applications only to find out El Capitan renders the computers useless for this task.

I could roll back to a previous OS but I shouldn't have to after spending £2k on a new machine.

I'm VERY disappointed as I otherwise like the machine but Apple have lost themselves a customer forever and I'm getting my money back. So disappointed as everybody kept telling me how great Apple was for audio visual work.

I have the same problem with the UD-H01. I found the USB driver to be pretty unreliable anyway (prone to pops and clicks), but with El Capitan everything has gone south. I switched to the optical input and put the USB cable away - problem solved.

I would check TEAC's site from time to time as they have updated the software occasionally.

A.

Same problem: Teac USB DAC Amplifier A1-501DA. Plays for a minute or two, then stops. Still shows up under Audio Devices, but no sound, can't be selected. If you turn off the Teac, wait 30 seconds, turn it back on, it resumes playing for a minute or two, then stops again.

Same problem here. My A-H01 plays for 5-10 seconds before the audio begins to break up and finally drop out. TEAC's driver for this amp/DAC was last updated in 2014. I've resorted to RCA patch cables, which defeats the purpose of having an outboard DAC.

I have the same problem with my Teac A-H01. It worked flawlessly with Mavericks and Yosemite, but has all the earlier-reported issues with dropping out, stopping entirely. I can get it to work sometimes by closing and re-opening itunes -- although that usually works for only one track on the album.

Hi everyone,

Same here, TEAC AI501DA,

I changed USB cables, switched on every ports,...

On the other way, it is still working when I boot on my superduper yosemite external disk drive. So I guess El Capitan wants a new signed Teac driver.

Contacted TEAC support yesterday -- no response. In the meantime, returned to 10.10 OS and everything works fine now. Also, external USB hub would not work under 10.11 -- so perhaps there's a problem with the USB bus? El Capitan isn't ready yet . . .

Thanks for the update. I just discovered that same issue with my Teac A-H01. Will keep checking their site and this thread. Let's hope they get that driver out soon. Listening through my iMac's speakers is no substitute.

10.11.1 also fixed my problem (TEAC AI-501DA). But I will not say "Good" to Apple, because this is a bug that exists for months (since the betas). I've report this problem during the beta period but apparently Bug Report was useless.

I'm sorry to inform you that my A-H01 only operated one session. After restarting OSX my TEAC won't play again..... As an extra: my ifi DAC isn't even recognized, i.e. it doesn't show up in de output page of the sound controls...

I'm not happy!

Regards,

Bert

OS X 10.11.1 Update released today fixed it. Thanks Apple!

Does Teac say the drive is for El Capitan?