Hi all, I haven't been on this forum for a while basically because I didn't need to. My plasma screen set up in the front room is all up and running with out any problems so all is well. However.... I needed to send the A/V signal from my sky+ box downstairs up to the bedroom. In the bedroom I have a Windows Media Center pc running a 20" TFT screen and an AV amp (well we can't just use a 14" portable can we?!!). Anyway I decided to go with a Digisender from AEI. I connected it all up and found the picture quality to be very good (once I'd removed the wireless network card from the pc anyway!). The problems start when we look at the sound... As I had connected the unit to an AV amp and a decent set of speakers I obviously had a good idea of the frequency response of the video sender. The unit is advertised as having HiFi quality sound. Now to me that means a frequency response somewhere in the region of 30Hz - 20KHz. Ok, maybe I didn't expect it to be quite as good as that but atleast somewhere near. Anyway to cut a long story short, the audio quality was far from HiFi sound! It was really lacking bass and the high end treble didn't sound too good either. It also seemed to be slightly distorted at times. Anyway, being an electronics engineer and having all the test equipment at hand to actually test the audio response of the units, I did a quick test. Basically this test inputs a constant amplitude sinewave into the transmitter's audio connections. The output of the receiver is measured over a range of different input frequencies. Now obviously a "perfect" system would output the exact same signal that was present at the input. In the real world using RF technology like this this isn't really to be expected... but how did the audio system perform???... Well not very well to be honest. The lower "cutoff" frequency was measured to be about 300Hz and the upper to be around 7KHz. Not very impressive at all! This certainly explains where all the bass has gone!! Now obviously this is an XSender DG180 which is supposed to be the later model than the DG200 Digisender (very strange numbering system!). My question is has anyone else had any issues with the Digisender audio quality when used on a "high quality" AV system (rather than just a small tv where the problem may not be noticed)? I'm currently looking on ebay to see If I can pick up a DG200 cheap just to perform the same test and get a comparison. I will get to the bottom of this!!!