I'm not the one who made those comments about that,but I have a pansat 2700a and I bought 1 of those cheap walmart receivers and I'm receiving the sound on there.It may have something to do with an update.I have a pansat 2300a and I could only receive some
AC3 on some chs.I sent it to panarex for a system upgrade so I could receive sound on the
PBS on AMC3.After they did that,I was able to receive all the AC3 chs.Hope this helps.