Ozarktom, you definitely have good ears! Their's nothing like Zellaton - it's not even close. If you really listen to music it's your speaker but if you want explosions and earthquakes look elsewhere. The detail, beauty and accurate bass is out of this world. I'm using Grand's but have my eyes on the Concert's. Still recovering from a CH Precision acquisition but once the dust settles I will most likely jump on the Concerts. All in house drivers and tweeters - no crossover on the full range - semi open baffle. What's amazing is that they've been around for about 85 years, one of Germany's oldest speaker companies. No hype, no marketing - just the purest sound on Earth. This is the only speaker I've ever owned where my passion for them has actually increased over time….