I returned the PSVANE CV181 and ordered two new ones in the hope that they would make less noise.
I also ordered two PSVANE 6SN7-SE GLOBE and two Shuguang CV181-Z.
My impressions in GAIN-section:
Shuguang CV181-Z
Very pleasant highs, good bass, stage is bigger and i feel a little distance to it, hard to explain
PSVANE CV181-T
As expected, very detailed, close and emotional, but again with a little hiss in muting or silent moments.
PSVANE 6SN7-SE GLOBE
Very similar to the CV181-T but noticeable more dynamic and lively
I heard all tubes many times in all combinations.
But everytime i hear this combination it catches me:
GAIN: PSVANE 6SN7-SE GLOBE
BUFFER: Shuguang CV181-Z
So, this is my clearly winner. And also it looks nice.