This chip is built in a DELL Latitude notebook and it gave very good results as we can see from the table. The stereo crosstalk was found less than -80 dB, which is also very good. The mini-jack connectors seem to be very good. However, if feedback loop is used (to get correct initial delay), this chip did not work on all the Latitude laptops we tested. We also found that the sync output volume should be set to a low value and that the sync. input volume should be increased instead.