Hi, I just want to share the excellent experience with the APEX III model. Al developed a wonderful speaker, the sound is Marvelous, really impressive, I can hear music for hours and love it each second (sorry the lego description in this more technical forum). Need to say that the service that Al give is really excellent, great communication and take care of details, (ah!, too have big patience), for sure one of the Best. Actually I'm using solid state amplification but soon will try tubes (Al recommendation). I'm trying to upload a photo. My APEX III still need the finish. Thanks Al.