If you can see/hear the difference then spend the money, if you can't see/hear the difference then you've saved yourself a packet.
Never seen any point in telling people what they can and can't see and hear...
Hifi: Innuos Zen Mini MKIII > Fisual Hollywood Optical > Quad Vena II > Custom Clyde interconnects > TA Monoblocks > Tellurium Black > Reiver Millburn MK II (Custom super tweeters & TQ Black Jumpers).
Headphone Rig: MacBook Pro/Google CCA > Fisual Hollywood Optical > Beresford SEG > Custom Clyde interconnects > Beresford Capella > Sennheiser 700s