Do you mean Ensemble network direct into IDxx of an 808CD?

If so, possibly, but not sure how you will control the Ensemble other than pre selecting a playlist then using MSR to start/stop/skip. Plus of course no internet for rip or internet radio. But if you are just testing, then might work.

The possibly bit is that for a direct network connection you really should be using a crossover cable (most patch leads are straight) but some (notibly GB connections in some kit) can use a straight connection automatically. If the Ensemble does not show up as a GB connection then you will almost definately need a crossover cable.

Easiest things is to get a crossover cable, although maybe not the easiest this time of year...

Or just an inexpensive basic switch (of known good brand) and use standard patch leads.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).