My old pioneer int. amp has pre-outs and I was thinking about updating its 50wpc to 75 or 100wpc

my jbls could use a little more power, i hear strain alot. and not to mention, i am in the mist of upgrading speakers....but this is a upgrade for a bedroom system, the amp will be used for my jbl hls-810's for as long as they work/make me happy

this system will be used until i get a suitable amp/int/pre-amp for what ever vintage speakers i buy. So power would be nice =]

I will upgrade to a pre-amp if i am not happy with the use of my old int. amp

but only if it seems fitting

I will be buying used

wanna stay in the 100-200 range for something that will make a sonic difference

thanks guys!