Hi Mark,

Looking at the Meridian Configuration program for the G61R, you can set the speakers independently for 96K/24 bit compatible, therefore, you should be able to run the front L/R as 24/96 and the center and rears as 18bit.

I don't think this will down-sample the front L/R (you should be able to check by enabling the diagnostics displays)...

How it will sound is another matter as timings were changed in later firmware (that the 24/96 are likely running), although it should again be possible to adjust within the G61R.

Hope that helps.

Cheers,

Steve

Main: 861v6 (LPS), 808v6, UHD722, DSP8000SE Anniversaries, DSP5200HC, DSP7200.2, SW1600, Sky Q, Cambridge Audio BD, Roon, M80
Office: 861v4 (LPS), 818v3, 800v4, HD621, M&K S150P, DSP5500HC, M&K MPS2810 sub x2
Son's system: 861v4, HD621, DSP6000.2, DSP5k.2C, DSP33, F80
Spare: MCD, 100 Series, 200 Series, 500 Series, C15s.