Martin Logan vs. Thiel

ML Ascents should not be missing sparkle on cymbols. What Classe amp and what speaker cable are you using?

I'm using a Goldmund SRI2 Integrated amp and a Classe CDP-1 and a Cal Audio CL-25 for sources. Interconnects are Audioquest Vipers and Audioquest CV-6. Power conditioning is a Monster HTS-1000

If you haven't done it in a while or since you got them, try positioning your speakers slightly differently. I find that with MLs (I have SL3s and have an acquaintance with the Odysseys), the sparkle on cymbals and the transient on drum hits is highly dependent on vertical angle of the front plane. Try raising the back of the speaker by adjusting the spike/foot in the back, making the front panel more vertical as it faces you. You can also try adjusting toe-in/toe-out slightly.

The Martin Logans should have plenty of sparkle. Try a silver interconnect between CD and integrated.

Also, make sure the speakers are out in the room and not up against the wall.

Try taking out the power conditioner. Run the integrated straight into the wall. This will probably help more with bass and dynamics, but it's worth a try.

To remedy the "sparkle" problem, you need to know that the electrostatic panels are essentially dust magnets. You should do some periodic maintenance to them every 6 months or so.

1) Pull the plugs on the speakers, and let them power down for a day.
2) Then, vacuum them, gently, and on both sides.

I used to have ML Sequel II's, so I know the wonderful sound that can be had from them. I also know that when you do get tired of the sound, that it is time for a change.

After 14 years or so, I upgraded to the Revel Studio. They are a much better speaker, although, I had to pay four times the money for them, and I had to double the power of my amp! The Studios image fantastically, and have better bass. They can also get LOUD! Something the ML's were not able to do without sounding brittle.

Good Luck in your search. If you do decide to upgrade, give the Revel line a try!