sharp and piercing high pitch /frequency coming out from Harbeth C7

Thank you all for your advice. However, I tried a more powerful Amp with 300 W per channel, the frequency is stronger. I also brought the speakers to another audio shop for testing. The same tracks with the sharp freqency happened on the Sonus Faber speakers too. But the sharp frequency was lessen by the high end speaker cable with filtering so I upgraded my cables too.

I avoid turning on the volume too loud, like just turing it not over "12:00 o’clock". I agree that It might be the power supply and the electricity fuse..... and also the placement of the speakers. I have moved them and they sound better now.

@noramnce @jjss49 i am looking into the RCA cable and the power supply now because this problem happens on CD not vinyl.

@mlsstlyes, agree and i thought about it. However, i have already chosen those with DDD recordings, DECCA, EMI, etc. And it is funny that seems like every time i hear the same track , i taste different things.

i talked to a cable company guy, he said my cable is too bright and sharp for harbeth. He suggests another brand which can “ pull back” the top notes a bit with warm and sweet sound.
maybe the resonance causes a peak with certain treble frequencies.... seems like this way, kind of....

@kenjit the tracks are :
Aida Garifullina, Cornelius Meister, ORF Radio-Symphonieorchester Wien ‎–Aida Garifullina

track 4

@ryder
it is glad that you did not have this problem on the Harbeth. I tried my cables and another better speaker cables on the Sonus Faber speakers in another shop and the sharp frequency happened too. 

i am checking directly with harbeth to see the spec. difference between 40th anniversary and the regular C7. thanks : )