I’m using Audience aR6-TSS power conditioner a few years, I’m very happy with the performance this power conditioner. Now I can upgrade this gear to get a brand new aR6-TSSOX by paying about US$1920. However, I’ve compared it side by side at the same time, it seem like the sound quality is not significant between aR6-TSS and aR6-TSSOX. Have you compared it before? Do you think it si worth to pay this money upgrade to get the OX version? Any input please advise. Thanks.