During my search for effective and maybe better suited speakers to my Sugden A21, I'm now investigating the full-range option. Have got some help and information from guys which have been on various triode festivals, they have actual heard a number of these single speaker drivers (in open baffle only). I now ask here if anyone have knowledge to available Diatone's P-610 or to any that have heard these (or similar) mounted in cabinet. Would they compete to a tranny amp like Sugden or Nait...? I guess the 8 ohm version is the one to look after. So far, I found but one supplier worldwide, with units and cabinet available, but rare and rather pricey, so would like more research/experience before a jump ! Thanks in advance. Per