Vox AC4TV8 Tube Amp - 4 watt rms output 16ohms
 

I bought the amp and it is very loud. I thought 4 watt should be small but actually it is not. So, what is the calculation ? At the back of the amp, there is a output jack saying 16ohm. Since I do not have 16ohm speaker, can I connect it to a 4ohm speaker?