If you are running Digital Speakers then the G68AXV or G68XXV won't work; as they do not have DSP outputs (the space on the rear of the unit is taken up with balanced outputs).

You will need the G68J / D / ADV or a later SL Model.

There is a breakdown of the inputs/outputs and photo's of most variations Duncan's Site - G68 Information

Thanks
Duncan

Streaming: Roon
Lounge: LG 65 Oled, Wiim Ultra & Neat SX2;
Study: Pro-Ject Pre Box S2 Digital, Quad Vena II & MA;
In Storage: M1's, Agent 4's, A500's, 500 series, 602/604/606, G51, Prime, M80 & lots of Quad
Storage: Synology NAS (100Tb+); HDMI Matrix: 8x8 HDBaseT, SkyHD.
Websites: www.meridian-audio.info