in case anyone wondering....Violectric 281+Chord hugo 2 on red filter+HE1000se is =99% Susvara. The extra warmth from both amp and the mild high freq rolls off seems to really get the HE1000se there. Hard choice of deciding what to keep between the pair.
It's good to know that the HE1000se plays on a similar level as the Susvara (well, at least to your ears) if taken care for the fine-tuning. I've had an encounter with the latter during almost an hour at my dealer, comparing it to my then HE1000 with V2 pads, both driven by the DAVE. However, it wasn't a fair fight, as I used a carefully elaborated EQ curve for the HE1000, while the Susvara had to content itself with an improvised ad-hoc curve. Anyway, I preferred my HE1000 in this comparison. In a later audition I compared the Susvara with itself, once driven by the DAVE directly, once driven by the HiFiMan EF1000. It wasn't really a contest: I preferred the direct connection by a great margin, the EF1000 sounded way too soft and slow. This just to show my sonic preference in case someone thinks I haven't heard the Susvara at its full potential.
If I were you, I would have the Hugo₂ drive the HE1000 (an easy load!) directly, without the detour via headphone amp. A good equalizer is the better sound-effect device than a useless additional amplification stage, the more so in view of Rob's care for an ultra-short signal path in the interest of ultimate transparency and accuracy within his creations, also considering the Hugo₂'s exemplarily low output-impedance and harmonic-distortion figures. It would be a shame to sacrifice all these virtues.
Personally I have found the ideal source a few weeks ago: a
FiiO M11 Pro, since recently equipped with the
Neutron Player app that offers a bunch of parametric equalizer options – in 64 bit! For the HE1000se (with Norne Silvergarde S3) driven by the Hugo₂ my settings look like this:
Another weakness of your configuration – as I see it – is the red filter on your Hugo₂. It only uses the WTA1 filter, which means that you just get a fraction of the 49,152 taps, one of its design highlights. Better use white or green instead, which imply WTA2.
My main system around the HE1000se looks like this: FiiO M11 Pro / Neutron Player / parametric EQ – Hugo M Scaler – Wave Storm dual-data BNC cables – Chord DAVE – Norne Audio Silvergarde S3 – HE1000se. For me it is a dream come true: virtually perfect reproduction of live sound in every respect, particularly spectacular spatial depth and uncolored instrument timbres, extreme transparency and resolution, unvarnished accuracy – with just a bit of the spatial cues missing that a headphone can't reproduce compared to being in a concert hall. And I can tell you: the Hugo₂ comes really close.