Bang & Olufson provides state of the art engineering especially the beolap 90 is more advanced than almost any other speaker and of cause measures well.
Some interesting companies which aren't often mentioned here but none of the less have a great engineering team:
Cabasse with La Spere
Cabasse's flagship product THE SPHERE pushes the limits of high-definition sound even further to captivate audiophiles worldwide.
www.cabasse.com
KS Digital
KSdigital entwickelt und produziert seit 25 Jahren Studiomonitore und Mastering-Lautsprecher von höchster Qualität. Jetzt informieren!
ksd-audio.de
Backes & Müller
Backers und Müller Audiophile Manufaktur - Wir stehen für hochwertigen Highend-Klang. Erfahren Sie mehr!
xn--backesmller-zhb.de
Avantgarde Acoustic
Über 30 Jahre sind Matthias Ruff und Holger Fromme gemeinsam bestreben ihren Traum: "Den besten Lautsprechern der Welt zu verwirklichen"
avantgarde-acoustic.de
ME Geithain
GedLee
Lyravox
It is time for a reformation in Audio: in the way we ‚consume’ music and in the way we integrate sophisticated audio systems into our lives and homes.
lyravox.com
GGNTKT
Powered loudspeakers from GGNTKT use evidence-based design and offer authentic reproduction for the unforgettable "you-are-there" effect. More →
ggntkt.de
Bohne Audio
Das innovative Bändchen macht die Bohne Audio Aktivlautsprecher zu den dynamischsten Schallwandlern der Welt. Mit Raumeinmessung und High End Vestärkern.
bohne-audio.com
Kling & Freitag even if it is PA it is worth to have a look e.g. the Vida with beam steering
www.kling-freitag.com
There are many other companies which have really great products and engineering with higher costs.