Teajay,
thanks so so much for all of your listening observations. I'm in the process of choosing new pre amp and amp. I'm settled on the LTA MZ2-S but am up in the air regarding the amp. How did the SET amp compare to the ZOTL 40? The LTA/Berning design has no problem with 4 ohm loads but many small tube amps do. It sounds like you preferred the SET. I'll be looking forward to your 300b results. For now I'll use the MZ2 to drive my DI's. Maybe the 8 watt Coincident Frankensteins will be a good match. I may just have to take you up on your offer to hear the Frank's on my DI's afterall Charles! Im surprised small SET amps work so well with 4 ohm speakers, but it's exciting.
Nitewulf, as teajay stated assuming the AMT tweeter is better than the DI's array is a wrong assumption. They are different sounding. While the AMT's MIGHT have been slightly airier, the DI's are more relaxed and musical to my ears and just as fast and detailed. The DI's are much more dynamic than the Legacys with a larger, more holographic soundstage. While I quickly realized I preferred the DI's to the Legacys it took me a while to realize just how good they are......they really have no right being this good at their price.