[sdiy] Multiples - passive vs. active?

[Justin Owen]

On 17 Jan 2011, at 11:31, Justin Owen wrote:

>> Is there any reason or advantage - other than cost and PCB space -  
that someone would choose a passive multiple over an active/buffered  
multiple? Is it always one is better than the other - or is there a  
time and place for both - or it really matters not in the real world?

> Multiples are passive, an active "multiple" is a unity gain mixer /  
amplifier.

> If the destination(s) is(are) high impedance, passive multiples will  
work, however modules with a lower input impedance will load the  
source hence the need for active mixing.

To clarify - by 'active' I meant 'buffered'.

So for peace of mind on impedance issues - it's active/buffered.

Any other takers?

Ta,

J