the best speakers I have heard is a SPEAKER I haven't heard YET? I have lots of speakers and even owned BOSE 901 series 5 STACKED in the mid 80's while stationed in okinawa. They do sound a lot better stacked and USING sound processors such as equalizers, dbx range expanders and carver sonic holography or omnisonic imager at the time. I owned the bose 601 series 2 prior to that. Until I heard other speaker designs and owned other designs is when I realized BOSE isn't for me, and the more I researched and contact merchants regarding bose, the more I realized they were just a mass market speaker company. The DRIVERS used on the bose don't make any sense whatsover and they are cheaply made. No high frequency drivers, no low frequency drivers. I can understand if they implemented a line source panel consisting of ribbons, domes, horns and 5 or 6 inch midranges and possibly several 8 inch or 10 inch and even 12 inch woofers to use direct and reflecting properties, then most of the audio industry might have more respect. All bose 901 is one big midrange box, it has NO DETAIL in the upper or lower octaves. I was never able to create tight bass even with the sound processors and equalizers. I was never able to get any crystalline highs either and a stacked 901 of whatever series using sound processors is the best possible way of making bose sound it's best, but it's still MEDIOCRE in comparison to a well designed dynamic, planar, electrostat, hybrid and linesource. I would only get a bose 901 these days as a MUSEUM PIECE because I collect vintage and new speakers I can afford. After listening to maggies and ohm's and owning an electrostat such as an acoustat and eminent technology and now ESS HEIL, why would I waste my ears on a GIMMICK technology as bose are! Yeah, I was duped in the 70's and 80's thinking bose was all that, but I was just in high school and a young adult not knowing any better and STILL LEARNING. 33 yrs later, I consider myself an audiophile and BOSE is not an audiophile speaker but mass market cheaply made and bad design speaker company. Many great speaker companies folded but it's all about sales and marketing when it comes to survivability of a product and that is where BOSE excels in NOT IN TECHNOLOGY! Using MIT engineers doesn't PROVE good sound engineering, that's like saying just because one goes to HARVARD doesn't necessarily mean they would make good lawyers.