D120 pre-out no audio

[Drifter]

Yep my playback path is

ROON >> RAAT >> D120 Ethernet

I have the rca cables connected to the coax sockets labelled as "Preout" in the screenshot

RCA cables are connected to a Fosi ZA3 amp which is then connected to some speakers I'm selling.

The intent was to demo these speakers without disconnecting the D120 speaker cables from my speakers as the D120 is wall mounted and the speaker cables are trunked to the wall.

I know the Fosi amp is good as I tried it at the weekend with an Innuos Zen Mini which has an internal DAC and analogue out (the Zen is now boxed up to post hence why I want to use the D120)

Pre-out means that the Devialet is no longer the amp driving the speakers. You therefore need an external power amp. The Devialet is now only the volume control and the music source. Power is handled by an external amp.

That's strange as with preout enabled it is still driving the speakers connected to the D120

For clarity:

ROON >> Ethernet >> D120 >> speaker cables >> Shahinian speakers

-----------------------------D120 >> Preout >> RCA cables >> Fosi ZA3 amp >> speaker cables >> sonus faber speakers

When enabling the preouts you obviously do so to use an external power amp. The Devialet's internal power amp remains active unless you disable it:

You can do this via the Advanced Speaker Settings in the Configurator:

1. Go to the Configurator (via Devialet's website).
   
2. Select your Expert Pro 120 configuration.
   
3. Under Output Settings, choose to disable the internal amplifier for the relevant channel(s).
   
4. Save and load the new configuration onto your SD card.
   

Everything sounds like it is connected properly.