Bob Carver is one of the true geniuses in audio, and has been for more than 35 years. The story of his first amplifier, made in an empty coffee can is classic. This is his latest effort: http://www.sunfire.com?CR.htm Please note, you have to click on the image. Ribbons are some of the very best sounding drivers ever, and they should be, the MSRP of the 5 speaker system is $4,000! Enjoy!