@Nectar
I have owned the Violectric V200 years ago and indeed it is a warm sounding strong amp but I found the sound stage very narrow with my LCD-2 and Denon AH-D7100 those days back in time.
Some IFI Micro IDSD Gen 1 was far more transparent, resolving with a larger stage than V200 in the past.
Haven't had HD600 yet but from what I ve read their sound stage isn't the widest, respectively strongly do depend on the amp.
I recommend checking amp recommendations in the HD600 thread instead.
I ve seen people suggesting OTL tube amps, Schiit Jontunheim etc