i have a valve jr head/cab combo, and i love the speakers, i just want an alternative amp for a clean tone at a cheap price. would i be able to use the cab with a smaller combo amp (tiny 15watt solid state fender amp) if i were to plug the "headphones/record out" jack into the speakers?

the cab is a 16 ohm it says if that makes any difference
what about the fender champion...it has the internal speaker jack...would this be able to connect to a cab?