3DsoundSurge puts Philips Acoustic Edge 5.1 sound card through their detailed tests.

Philips is mainly famous for its home audio and video equipment. In the PC multimedia sphere the company makes a series of inexpensive multimedia acoustic systems. A year ago the company also released sound cards for the USA market with Edge suffix: a 2-channel Rhythmic Edge (PSC702), a 4-channel Seismic Edge (PSC704) and a 6-channel Acoustic Edge (PSC706). ...

Neoseeker's review of the philips acoustic edge psc 706 sound card which uses the thunderbird avenger chip.