- Feb 11, 2008
- Reaction score
- Feb 11, 2008
I just got my Mojo and have the problem with the first half-second of a track is cut off. It happens on a MacBook Pro with Vox and Tidal. I haven't tried other apps yet.
Chord really needs to provide a firmware update to fix this. I don't have this problem with any other DAC.
Mojo in common with Hugo has a mute function . This occurs when the usb changes sample rate or switches to dsd. This is to eliminating the huge bangs that some os creates. Losing half a second is better than losing your headphone drivers.... Rob
The problem of muting the initial start is due to certain OS and apps - when the sample rate changes, the data in the buffers get sent out at the wrong rate. When you switch from DSD to PCM you then get a loud bang, or track played at the wrong rate for a period. Now this fault is in the app, its absolutely nothing to do with the DAC.
So to fix the apps problem, if the sample rate changes, I force a mute for 0.5 seconds, so that you do not hear these noises. On some apps, you can force a small silent period at the beginning and this solves the issue.
If I didn't do this I would have people complaining about bangs thumps and music being played at the wrong rate. Better silence than shots being fired off!
Some applications allow to set a delay in milliseconds, to overcome this.
Also, I noticed clicking sound when scrolling my trackpad in Safari. I dropped the sampling rate in the Audio/MIDI Setup and that corrected the problem.
Your computer will consume quite a lot of CPU resources if unnecessarily upsampling, by default.
What resolution music files are you playing?