The single-ended outputs on the A1/GS and A2/OG do not sound as good as the balanced outputs. To get the best of out these DACs, one needed to use the balanced outputs. Some crazy folks, myself included, chose to use a passive expensive balanced to single-ended line level transformers because we liked that sound. Anyway, some folks felt the use of the SE outputs super gimped the performance of those DACs. I prefer to think: not as bad as people say and also as good as people say. On the LIM and MIL, the single-ended outputs sound just as good as the balanced outputs. There's no need for BAL to SE conversion and doing so in my opinion made the sound worse. This is why a member of two asked: how is the SE? It's not uncommon for DACs which have both SE and XLR outputs to have the outputs different sounding or worse sounding. Back in the day, many DACs would take the SE output and run through a phase splitter for XLR. That made the XLR output sound worse. The other method would be to take the balanced output and sum it to get the SE output. The best method is dual parallel circuits for both outputs or a single circuit that can handle both, instead of piggybacking.