I'm confused. Perhaps I haven't been clear.

I am using 2 inputs into my 218:

Input (1) - Sooloos into the ethernet input.

Input (2) - audio from my iMac (e.g. when watching a film) - the 218 doesn't have a USB in so I am outputting from Mac > Arcam DAC and then outputting Arcam DAC > 218 > audio input.

I am then outputting from the 218 in 2 ways:

Output (1) - SpeakerLink > 3200s - this works perfectly for input (1) and input (2). No problems at all, apart from the slightly clunky selection via the iPad IP Control app.

Output (2) - in order to output to headphones I need to go via a headphone amp. The Mojo has 2 inputs, digital optical and digital coaxial. I am connecting the 218 to the Mojo via digital coaxial.

I get loud crackle via the Mojo *unless* the 3200s are muted. This is the case on input (1) *and* input (2). Turning the volume down on the 3200s does not make a difference. They have to be muted.

Why is this?

Is there any way to get round it?

Winot