lrossouw wrote: 
> Some people have noted that some home theatre style receivers convert
> the analog inputs back to digital for processing.
> In these cases people have recommended to use the digital out from the
> touch as you are probably losing more with the DA conversion ->analog to
> receiver -> AD conversion -> processing -> DA again.  
> 
> Some receivers have a pass through which passes an analog input through
> the receiver without the digital conversion process.  Turn this on if
> you want to use the Touch DAC.  On the other hand whatever sounds better
> to you is also good :)

Most modern ht recievers works this way and all of them do if you use
any of the DSP features including the subwoofer crossover this is
usually done digitally these days so if the reciever by some fluke has
an true analog passthru it will only be 2.0 .

Analog passthru will be increasingly rare these days as it makes no
sense to design a ht reciever this way , it will be expensive as you
also must have an analog volume system and most sources are digital
anyway except for legacy stuff like vcr's .

And this kind of amp have gotten a a lot better in the last decade the
built in DAC's are often very decent and the ADC for analog sources is
often so good that it is often the best way to connect analog sources to
.
These amps does have some room eq and simulated surround modes that is
usefull .

For sceptics I urge you to try an ht amp as preamp/DAC many of the
better ones have pre out , the letdown compared to really good high end
equipment is the built in power amps if you have demanding speakers :)
you be surprised over a humble ht recievers small signal performance.


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