So after a short bedding in period I think I can safely comment on the Beautiful Witch aPs 300ohm...
Initially I was slightly underwhelmed direct out of my M8 (on turbo mode), then moved on the Cayin C9 (tube mode, high gain), which seemed to have enough power to drive them but still left me wanting a little bit more from the overall presentation. This is unusual because the C9, despite being a portable amp, typically handles everything I throw at it without issue included fullsize overears with high impedance loads. I have finally landed on running these directly from the Little Dot 1+ desktop hybrid tube amp with Voskhod tubes (not an overly warm tube with plenty of detail retreival).
They have come
alive...
Bass: reasonable extension, full-bodied, slow attack and decay, a real sense of weight
Mids: good male vocals, warm and emotive female vocals (perfect for my tastes), good instrument timbre
Treble: enough treble for the details, but certainly not the focus here
Through the Little Dot these earbuds have a very dream-like presentation, detail is present, but the combination of a warm tonal balance, heavy note weight and slow decay that notes carry and the not-so emphasised imaging/separation blends into a very intoxicating experience. The name 'Beautiful Witch' is apt, everytime I listen it's as if I'm being carried away, seduced by a spell of sorts, to a Witches' coven. Female vocals are lush and the stand-out feature. They rise up with a presence and forwardness, out over the top of the weighty lower frequencies, to remind you that the Beauty of this Witch is her voice!
Thanks to Wong for the kind and curteous service!