Oppo 105D digital volume question

Access the oppos setup menu via a screen. See what the startup volume is as well as the max volume. I'm running mine into a Schitt Gungnir, but then also into an integrated. Neither your Ayre nor your ps audio have any pots so the oppo has to serve as a pre-amp of sorts. 

Try this site: 

I don’t think you can use the Oppo as a transport to control the volume of the Ayre DAC

My understanding is that the Oppo volume control is only active when using the “analog” outputs. The digital (coax/Toslink) would not work to control this.

I thought the Ayre has the ability to act as a preamp- if this is true you should be able to attenuate volume from the Ayre directly to control the S300.

I would still go into the Oppo’s internal setup menu and select speaker size, any DSD/PCM priority and set the volume output to 100% anyway. Go coax into Ayre from the Oppo.

@designsfx but if you use the Codex as a DAC (rather than a headphone amp) doesnt it negates the volume feature?

Oh, And I retract my earlier statement that the ayre didn’t have a potentiometer

Yeah, I also kinda doubt the Oppo’s volume control can be used thru its digital output.  But you might be able to use this high-quality remote volume control that’s designed to be very transparent.  Best of luck 

https://www.usaudiomart.com/details/649929587-placette-placete-volume-control-passive-preamplier/