My B-2 with Waveio XMOS USB frontend randomly loses lock. This started happening only recently, after many years of reliable service.
Connections are as follows:
Mac Mini -> Wavio XMOS USB board (Luckit device in OSX) -> SPDIF -> B-2 D.
Will be listening to music when, apparently randomly (in the middle of a track), lock LED goes out & sound stops.
Sometimes OSX reports Luckit USB device is still recognised, othertimes it's not.
Power-cycle of DAC often brings music back (for a random period of time).
I've checked supply voltages & seating of Tridents (all LEDs/voltages look good).
Even wired up Waveio to use i2s rather than SPDIF, no change to symptoms.
Checked for overheating, nothing apparent.
Please advise what to test/measure to track down this problem. Very frustrating.
Looking to replace in long term with new 8-channel DAC, but that's another story.
BTW, old B32 still workin fine.
I tri-amp speakers using 3 DACs, B-2 was one of those.
Testing has used B-2 on its own from iPad as headphone amp to eliminate multi-DAC environment from equation, same problem.

Fingers crossed, looks like it was the WaveIO USB board (both i2s & spdif outputs). Was already running internal power from TP shunt regulated power supply. Voltages all checked out.
Could be my 10yo Mac Mini, but all USBs behave the same, & only on the WaveIO. Other USB dac interfaces work fine.
Running USB->spdif into the B2 using a borrowed Audiophilleo, & it's perfect. Maybe the reclocking did it, who knows.
Even with nothing else connected, WaveIO would drop lock rendomly.
Time to move on:
Still want a new 8 channel B4, but that's another story.
Stay safe & happy, people.

Edited by user Thursday, May 21, 2020 8:21:46 AM(UTC)  | Reason: Not specified