On target about the DAC,this has been an on again/off again topic for a while now (I know I am getting of topic again,I seem to be pretty good at it)Hame based is easy but portable gets tricky.
In order to keep down the weight and complexity a single power supply is called for,but you really want separate power supplies and grounds,at the MINIMUM isolation circuts are needed to decouple as much as possible ( keep digital noise outta the analog section ).
Then there is the DAC chip itself (input receiver and digital filter will work off 5 volts).
Low current/low voltage DAC chips are hard to find,but not impossible.
I just received two Analog Devices AD1861 DAC chips that spec out good for portable use.
Sound quality ?
Who knows,but I like AD parts so anticipation is high
All I need to do is GET TO THE #$#%^& THING !
But when I do,will post results (of course )
Prelim :
CS8412 input receiver,ZERO OVERSAMPLING ,passive filter to OP-275, or microphone transformer output
Hoping for the best but still should see improvement over portable (home ?) CD player DAC
Fingers crossed
posted 07-31-2000 01:17 PM CST (US) 
