Hi Pennywizz6.

The PS112 looks the business. 150 RMS Per side / 300 Programmed with a full range 12” Driver. Very Nice.

Quote:
Is it a must to use a mixer?


I would say yes. I would still highly recommend you pick up something like a mini Behringer desk. It will give better control all round.

Something simple like this would do…. !!!



This will give you 1 quality pre-amp for a Mic and 2 Stereo Channels for 2 keyboards, and a limited EQ that will help your overall sound.

Regards.
Sharp.