I have upgraded from Ayre AU24SE rca between my preamp and new Ayre 5 VX Twenty to the Ayre AU24 SX balanced cables. I have used Audience cables for all my interconnects and speaker cables for many years. My dealer loaned me a set of the SX for a weekend and the difference was enough for me to order the upgrade. The SE cables are excellent in musicality and detail, but the SX added more weight and clarity to the presentation. I will be upgrading the remaining SE cables to SX over the next few months.