I have a pair of Sonics AS-447 that I had the pleasure to hear new. About 1973. I purchased them in Pony's electronic store , Fusa Japan. That store was the electronic's super store in the Pacific. You could listen to every Japanese brand of tuner, Marantz, Sansui, Kenwood, Panasonic, Sanyo, etc and select any Japanese Speaker system, not only brand but every size you wanted to pair them with. I bought a Sansui 5500 receiver, Teac reel to reel, and a pair of Sonics AS-447As. I don't think these speakers were ever sold in the US market. If I remember, I chose them over the Pioneer speakers because of the bright clarity and less boomy bass. Jump forward 50 years and I am still loving them. They were parked in the basement for many years until I got interested in tube amps. I finally had an old Fisher x202b amp recapped and bought a pair Fisher XP-9bs to mate up to it. I thought that was what was used at the time of the amp but greatly disappointed. They were in beautiful cosmetic shape but just dead sounding. I used a small pair of Bose speakers for awhile but I thought it should sound better. My son had a pair of Polk SDA-2 speakers I tried. They were loud and boomy but not clear. I finally drug out the old Sonics. Finally, the difference between night and day. There was no comparison between these old sonics and any of the earlier speakers I had been using. The brightness, clarity, accurate reproduction of instrumentation. I listen to big band jazz, pop music from the 70s and 80s. Most of that music is produced with real instruments and real voices. If one is looking for good speakers, he needs to listen to a speaker that was made to reproduce music for a certain period in time. I do admit that much progress was made in the 70s and 80s over the speakers of the 50s and 60s. I hope you get to be as much of a fan of Sonics Speakers as I am. I just purchased a pair of Wharfedale W70D speakers. I have always heard they are about the best speaker to pair up with a vintage tube amp. They need a little work so will let you know how they compare to the Sonics.