Lizard_KingHi!
No, it can't play 192Khz on the Mac without drivers.
What it can do is play up to 32bit/96Khz (doing it right now). Below the details from bit perfect (recommended).
So in short it can play: 16bit (32,44.1,48,88.2,96Khz) and 32 bit (32,44.1,48,88.2,96Khz)
Cheers,
K
----------------------
Name: aune T1mk2 tube usb dac
UID:AppleUSBAudioEngine:AUNE:SA9027 USB Audio:14230000:3
Model UID: aune T1mk2 tube usb dac:262A:1168
Device Id: 63
Hogged: YES
Frame Buffer Sizes: 29 - 9216
Current Frame Buffer Size: 512
Left Channel: 1 Right Channel: 2
Sample Rates: 32.0 44.1 48.0 88.2 96.0
Audio Streams:
Stream ID: 64
Stream Number: 0
Starting Channel: 1
Total Channels: 2
Total Physical Formats: 22
Physical Format 1:
Sample Rate: 96000
Bit Depth: 32
Format Flags: [ kAudioFormatFlagIsSignedInteger kAudioFormatFlagIsPacked ]
Format ID: mcpl
Channels Per Frame: 2
Bytes Per Frame: 8
Frames Per Packet: 1
Bytes Per Packet: 8
bluemonkeyWell, tubes have a limited lifetime. Leaving them on for no reason doesn't make them last longer. 3000 - 5000 hours and they need to be replaced. So, leaving the T1 on all the time is limiting the tubes lifespan. Other than that, you can leave it running forever I guess...