Theoretically, the headphone output on your iPod or whatever can drive a cabinet, but it will probably be very low in volume and not sound so good. I would say, yes, add a power amp to the mix.
Checkout something like the Crate Powerblock. Just a 150W Solid State amp that works well with modelers and Multi-FX units. I remember people bringing that and a POD for backup.
The other option is to just use the Return from the effects loop of an amp you already own. This would allow you to use the power amp to do what you are looking for.
Checkout something like the Crate Powerblock. Just a 150W Solid State amp that works well with modelers and Multi-FX units. I remember people bringing that and a POD for backup.
The other option is to just use the Return from the effects loop of an amp you already own. This would allow you to use the power amp to do what you are looking for.