best results would be to be able to use the spdif outs ot a burner, but I am assuming you have a burner with analog inputs only. I'm also assuming you have a burner with no input metering, otherwise you would have seen it being driven past digital zero. Try any of the 3-8 op, as they are unbalanced -10db, vs the 1/2 op which are +4db balanced. Again I'm assuming your analog inputs to teh burner are probably -10db rca connections....