Well, I have a degree in industrial Electronics, so when my old junk stereo died, I designed and built my own.
My main amp is built around 2@ LM3886 chips. It is capable of 76W/side of pure audiophile sound if properly heat sinked and with adequate power supply. I built a 400W/side Power supply so not a single transient spike will be missed --> max headroom. I can drive it much harder if I'm willing to accept increasing distortion.
I also built a pair of D3s from the plans section on Parts Express with a heavily modified cross over using audiophile components and redesigned for a better frequency response curve. They are comprised of dual 8" treated paper cone woofers with a single silk dome tweeter. I painted them using faux granite spray paint and they resemble granite pillars. I call the combo Bubba and the Stoners.
The sound is flawless at any listening level imaginable. They system is massively linear down to 37 Hz. 3D spatial sound out of a 2-way pair. It's kind of astonishing. And best of all, I built Bubba's volume control to go to 11 !