I second this problem. It automatically uses the “Volume adjustment when loudness is unknown” value for deciding how to normalise the track, which in your case is -5,0dB and in my case is -6,0dB.
Hi @Jin-Bin_Yang,
Thank you for your patience while we worked through the queue. We are aware of issues when using volume leveling with KKBOX content and we’re working with KKBOX to resolve these issues as soon as possible.