RWD all I can say is I do not think you will be disappointed. I have tried many other far more expensive highly regarded SS and Tubed designs , including OTL's, SET's and I find the ASL's superior. Could be my 50 year old ears, except that the ASL shines in the areas where other amps failed by commission, in other words- where other amps failed the ASL's sail through rough sonic seas.They seem far more powerful than their rating . Faults previously attributed to recordings disappear or are ameliorated to an extent that I no longer have the anticipation of a particularly difficult passage that will test my system and force me to shut down my ears or reduce the listening level in the imminent face of the unpleasantness caused by too stern a test.Coherent, great soundstaging, powerful and detailed among other attributes.