twitter sound from right speaker only??

Hi

I am new to this forum. 

I have a pair of focal Sopra 3 speakers. They are hooked up to McIntosh monoblock/preamp combinations. I use Hifi rose 130 as a transporter and Chord TT2 and M Scaler as a DAC. 

Recently, I realized that the right and left speakers sounds different and the twittering sound is coming from the right speaker only. Right spk sounds bright and light and left spk sounds heavy and more base and no twitter sounds. 

Is this normal??