It has been brought to my attention by people who run floorstanders that upgrading from receivers to pre/pro allows one to realistically move from 'small' to 'large' settings for a more seamless spread of bass. Is this true? I've never much liked the 80-90-100Hz cuttoffs on floorstanders. I have a soundcard that lets one go from off-40-60hz etc. in 20Hz increments to 120Hz and the difference from 40 is 80 is very noticeable. T.