This evening, I spent a about 90 minutes playing around with various combinations of amps and headphones :-
- Zana Deux
- (Currawong's) Woo Audio WA7 Fireflies
- Invicta v1 DAC/Amp
- Fostex TH-900
- (Currawong's) LCD3
- (Musica Acoustic's) Mr.Speakers Mad Dog v3.2
With regards to the amps, the source was the Invicta.
Of the headphones I tried, I found the synergy between the MadDogs and the Zana Deux to be most appealing to my tastes. The bass on the TH-900 was simply too loose on the Zana Deux whilst the LCD3's signature as a whole didn't really agree with me but if I had to choose an amp for both of these headphones, the Invicta's headphone actually performed well.
I'm not certain but I think the output impedance was the ZD was the issue with the other headphones. Having said that the listed specs of the Mad Dogs & LCD3s do have very similar impedances.
The synergy between the ZD and the MadDogs is crazy though. It's a pity the MadDogs isn't mine.