Wanted to share after many hours of fun listening, that now my favorite combo driving the Dl's is the LTA Micro-ZOTL with a SET 2A3 amplifier offering 3.5 watts at 4 ohms.
Now get this! This SET 2A3 retails for only $1,200.00! It's the Opera Consonance SET headphone/integrated amplifier. My dear friend Mike Kay (CEO of Audio Archon) who by trade is a professional engineer performed surgery to remove totally out of the circuit the inexpensive volume control so the Micro-Zotl was directly driving the amplifier section. It was quite good before surgery, but now it kills it! The purity/transparency and macro-dynamics have been unleashed. I experience this combo as retaining the sheer power/dynamics, spatial qualities, and purity of the Micro-ZOTL used as an integrated amplifier, plus the color/timbres, and "meat on the bones" three-dimensional imaging that a 2A3 tube brings to the mix. I had no problem with volume levels and dynamics with the Micro-ZOTL as a stand alone amplifier as I shared before, however you can hear what the extra 3 watts delivers when the music calls for it.
I scored this "little gem" from Quest For Sound. If they have anymore in stock I would go for it. Remember, to get what I'm hearing now you will have to modify it yourself or pay the small charge to remove the volume control out of the circuit.
My final experiment will be with 10 watt 300b mono-blocks that I will be getting hopefully in the next couple of weeks. Right now I'm in "sonic heaven" with this combo. Just think, world class performance with a pair of 3K speakers, that you can drive with anything, and electronics that retail for less then 3k! The NOS tubes I use actually come close to the price of one of the pieces! By the way I'm using a pair of NOS RCA 2A3 tubes and one NOS RCA 5751 in the Opera amplifier