Mac USB to TEAC UD-501 DAC no sound... has anyone solved/sorted?

[terzinator (Chris)]

Moved a few things around, and I have a mac mini roonserver in my den. Don’t listen in there too often these days, but thought I’d try to go out from the Mac’s USB to the TEAC UD-501 DAC.

But no sound.

• Roon recognizes the USB DAC as an audio endpoint

• I can see the USB DAC in the Sound control panel of system settings on the mac

• It plays just fine using different platforms/sources (YouTube, Qobuz, etc…)

• It shows the signal path as if it’s going to play

But it just sits there and doesn’t play.

Found this locked thread from eight years ago that discusses the same behavior…

No audio in exclusive mode using USB with Teac UD-501

Setup Roon: Version 1.4 (build 306) stable (64-bit) OS: Max OS X High Sierra, version 10.13.3 Computer: Mac Mini (Late 2012) Music Storage: On local disk (Samsung 850 Evo SSD) Collection Size: 402 albums, 3771 tracks DAC: Teac UD-501, connected via USB Other: Schiit Wyrd, Schiit Eitr The Issue Attempting to use Exclusive Mode via USB to Teac UD-501 fails, with no sound for any format input files (both PCM and DSD). I’ve tried this with and without a Schiit Wyrd - this did not make a di…

(And I don’t think I got anywhere unchecking “Exclusive mode”…)

Not the end of the world, as I can use a little Raspberry Pi streamer to use as an endpoint, but just wondered if anyone’s made any headway on it.

[MarcMarc]

my UD-507 works fine my M4 Mac through usb (front and rear). Exclusive mode works and I also get DoP DSD256 without issues at all.

„Enable Integer Mode. This improves performance by bypassing CoreAudio processing, allowing bit-perfect, direct output to your DAC“

To enable Integer Mode in Roon (macOS only), go to Settings > Audio, click the gear icon next to your DAC, select Device Setup, and toggle on Enable Integer Mode.

[terzinator (Chris)]

@MarcMarc

To enable Integer Mode in Roon (macOS only), go to Settings > Audio, click the gear icon next to your DAC, select Device Setup, and toggle on Enable Integer Mode.

yep, that’s already selected by default for this output

[BlackJack]

Often times when it shows as playing in Roon, it’s just a matter of insufficient volume. Have you already checked your volume settings / levels?

[terzinator (Chris)]

@BlackJack

Have you already checked your volume settings / levels?

It’s not playing. It sits at 0:00 at the beginning of the progress bar, not moving.

[mjw (Father! Father! Resist not! Let us destroy the core! Set us free!)]

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[terzinator (Chris)]

I found a workaround.

I use HQPlayer occasionally in my main system, and i thought I’d test it out from the mac mini to the TEAC DAC, and sure enough, it works just fine.

So it appears that it’s oddly just a roon problem. When HQPlayer becomes the actual output stream, it seems to work just fine from the Mac to the DAC.

Anyway, it’s an extra step, but pretty insignificant. Sounds good, too!