At the minute, it appears to be lead configuration. As I said if configured a certain way, will only allow discrete, movie, thx etc, then cycles the same four when continuously pressing the DSP function. No way will the unit select the Meridian Trifield and other DSP modes with leads in this position.?? Thank you for the link and for the swift reply

G68J (power upgrade), G98, 5500x3
James Guiler