The differential equipment will come after all the new boards are done for the Insight line (two down, three to go at this time). In addition the differential line was planning on using a new Wolfson super high perfomance digital chip set. However, no sooner than we get a new digital board designed for that chip set then Wolfson announces an even more super performance digital chip set. We have sampled the newest chip set and compared it to the planned earlier Wolfson chip set, and at this point in time, it seems to leave something to be desired. It may be the implementation from the source using the chip in some very interesting designs (TwistedPear) on it may be that Wolfson has gone overboard in making the newest and greatest chip "sound like analog" and dropped the ball somewhere. We are waiting for feedback from the designers regarding this. The differential equipment cannot be done until the DAC chip is nailed down, it takes that design, with differential output capability that the Philips chip set lacks to set the wheels in motion on a differential DAC or DAC/preamp.
In the meantime, the Insight equipment is shipping now. You have never heard solid state like this before.
Regards,
Frank Van Alstine