need more POWER

I have an area for HT that has only one 20 amp receptacle . It currently

has an integrated amp using one outlet and a cheap power strip plugged

into the other outlet . The power strip is powering a flat screen tv and an electric

clock . 

I want to add an amplifier to the pre/out of the integrated amp . How can I get

sufficient power to the second amp ? I am not sure if a power strip can deliver

the power that an amplifier (SS or tube) will require for proper operation plus

the other items .

Thank you .