Sorry...live raw notes.
Headphone DAC/Amp: Fostex HP-A8
iTunes via Audirvana+ 1.4.6: integer mode 2
Both Headphones using 1/4" jacks
Spanish Harlem - Rebecca Pidgeon (16/44.1 FLAC)
TH-600 seems to sound wider, whilst SigDJ seems more closed but deeper imaging, & taller sound stage.
SigDJ vocals has a more intimate whilst the TH-600 seems more set-back. By this I mean positioning from the listener (not talking about mid forwardness/recess-ness).
The SigDJ's S-Logic makes some instruments sound to come from behind the listener, whilst the TH-600, it feels more like sitting on row 5.
TH-600 has more distinct instrument separation
Through The Eyes Of Love - Sarah Morgann (16/44.1 FLAC)
Again, with the SigDJ's S-Logic, I feel I'm on the stage with artist and pianist performing, whilst with the TH-600 it's more taking from an audience's position.
The SigDJ's more closed proximity to the performance makes it easier to hear the detail, but with the TH-600 it feels more natural and laid back.
Climax - Usher (16/44.1 FLAC)
SigDJ's bass...wow. Trebles are also more forward and airy but not sibilant. More engaging on the SigDJ. The TH-600 feels too refined for whilst the SigDJ feels more engaging with its all S-Logic imaging. Usher feels more "hip" with SigDJ. The TH-600 has more of attending a sophisticated black tie concert but no one's allowed to jump up 'n down to dance.
Want U Back - Cher Lloyd
SigDJ's closed but "all around you" soundstage actually feels more engaging again in comparison to the TH-600. Same Usher's Climax, the TH-600 feels a little too refined for this kind of fast fun genre.
Star Wars Main Theme - John Williams (16/44.1 FLAC)
The tables have turned again. The TH-600 feels rich, spacious with a large orchestra to breath. The instrument separation helps here. The SigDJ feels too closed for this kind of presentation.
Don't Stop Believin' - Journey (DSD DSF 2.8MHz)
The TH-600's larger soundstage again seems to let this kind of rock to breath more nicely. The SigDJ actually felt more 2D-ish which surprised me. I did reseat the headphones on my ears properly for the S-Logic positioning but no improvement.
This is what I've got so far. Apologies for the brief notes.