Listened to and wore all models of this line (330BT, 220BT, CH500). All of the above are quite strong, and with slight differences in sound. The 330s sound better, of course, and have a handy shift/pause lever. I took fresh 510s, I was very surprised that the entire active part is located in one ear cup. The battery is small in size and does not hold cold at all. The creaking of the structure compared to previous models is simply terrible. REALTEK processor - that is, only the name comes from Sony. Private glitches when playing youtube, communication dumps. Phone huawei p30 lite. The final result, one of the headphones broke off along the hinge. Now they are neither price nor quality competitors for me.
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