My youngest daughter, who is now college, had a pretty killer system in her room that included a pair if Cerwin Vega floorstanders, Adcom amp, Optimus DJ style mixer and a Sony CD player or her iPhone/iPod as a source.
She decided she would like a Bluetooth based system. So I have all those items back. I hooked up the CV speakers and realized just how much bass I am missing. The mids and highs were no where as refined but that killer bass.
So, I took out the Jolida tube amp and ran the analog outputs from the Sprout to a PSB Subsonic 5 10" subwoofer. Much better.