"Dennis Lee Bieber"  wrote in message
news:iir2mepe40dm1gqn0utae09lfp86g8g0a4@4ax.com...

>>That much is true. There are no analogue inputs or outputs, and no
>>intended form of hardware DAC. The PWM is just the closest that the
>>Pi designers could get while adding the minimum number/cost of
>>additional components.
>
> If one really needs analog I/O

If you want to use the Pi to digitise analogue recordings from tape/vinyl,
you need analogue input. But that's a fairly rare occurrence.

For feeding speakers or headphones you can use a Bluetooth-to-analogue
adaptor in the speakers or headphones, with one big proviso: the range of
Bluetooth is crap compared with the range of FM headphones that require an
analogue input. I can go round all of our house (and it has a lot of masonry
internal walls *) and still get good reception with my FM headphones, but I
can barely get good reception on the other side of the room from my laptop
using a bluetooth adaptor that my earbuds plug into. There needs to be a
longer-range digital equivalent of Bluetooth which is point-to-point but
which has a range of maybe 100 metres through several brick walls.


(*) Even our DECT handsets get a bit iffy at the opposite end of the house
to the base station - sadly there are only phone sockets at one end of the
house.

--- SoupGate-Win32 v1.05