A couple of years ago I bought a Raspberry Pi 2 to use as a music server. However, when playing through a Benchmark USB DAC I hear pops and clicks in the audio. Instead I bought a Cubox and use its Toslink output which works perfectly. Does anyone know if the USB audio issue have been fixed in the third version of the Raspberry Pi?

I had no problems with the first Raspberry Pi and a fiio e10k USB DAC.

Did the same and had clicks with a different USB DAC. I'm waiting to hear whether this one works too!

Connecting the analog audio of the RPi (1B) to my receiver causes the receiver's CPU to slow down to the point where it is unusable! It looks like the RPi puts out a DC-biased signal, and the receiver is seriously lacking input robustness. The two devices were also connected via HDMI, ruling out ground issues.

I've since moved the music setup to also use HDMI (the DAC in the receiver is bound to be better anyway), but sheesh, be warned.

How on earth do you know what your receiver's CPU is doing?

The UI slows down gradually until the whole thing is unresponsive, reproducibly. IIRC disconnect the analog input, and the UI picks right back up.

I've no idea if it's a priority interrupt firing too much, body diode current weirdness, or some thermal issue. And I'm certainly not going to keep teasing the fault to figure it out.

Yeah, wow. That's wacky.