Mono preamp supplying two amps

[polo16mi]

Hi:

I have a question sticking in my head, and i ll  shoot it here, just for curious....

If i make two amp stage, identical, mono, can i supply them with just one preamp?

Like this...


preamp------amp1---spk1
         |------amp2---spk2

[joecool85]

Hi:

I have a question sticking in my head, and i ll  shoot it here, just for curious....

If i make two amp stage, identical, mono, can i supply them with just one preamp?

Like this...


preamp------amp1---spk1
         |------amp2---spk2

It depends on who you ask.  I've heard that you can split it if both amps are on the same ground plane (IE - mounted in the same metal enclosure, with the same grounding points), and that otherwise you would need a chip to do the splitting for you.

I'll be interested to hear what others have to say about this as well.