Mnyb wrote: > Yes the filter less NOS DAC a very audiophile solution to the > "everything sounds the same" problem ;) ok enjoy the artifacts if you > fancy. > > But as usual there are "explanations" that these things in some magical > ways really is "better" than a regular well designed DAC . > > Honestly , I think we are trolled ? the original questions is a bit to > silly , but now the thread has gained its own momentum ....
The classic NOS DAC is based on chips in the the TDA1541-TDA1543 family which were supposed to be used with a separate digital filter chip, such as the SAA7220. The digital filter chip included a filter to correct high frequency losses due to the arpature effect. By leaving it out, a far more steeply rolled off (potentially audible) high frequency response is obtained. The chips in the TDA1541-TDA1543 were designed to be used singly, but even multiples of them can be hooked in tandem to obtain improved dynamic range. A more practical way to achieve better dynamic range is to simply use a modern chip which can be adequate all by itself. More modern chips have been made with strappable digital filtering to provide a similar audible high frequency roll-off. This sort of engineering is considered by the technical mainstream to be backwards and wasteful, but we are talking high end audio, here. ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=105572 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
