For the price I give these 5 stars and for an audiophile tweeter I would give them at least 4 stars. Doing mild tuning still and these just get better and better with mild boosts and cuts (.2 db here and there) crossed over at 3750 Hz in kick panels powered off 2 channels of a Zapco Z-150.6. Brings up 20k and does not fluster and is EXTREMELY tunable. I have had SEVERAL other tweeters from Hertz, CDT, Image Dynamics and so far these are the best.