Timeless OG is definitely a gem. Try it with different tips and the better cable you use, the better it performs. It’s my fav iem I have bar none. it’s so fast and so tight, yet using 1Z it’s rich and analogue. I use JVC spiral dots and Aztec Crystal clear tips. the sound with spiral tips is amazing, it’s supposed to be bombastic bass and slow, but since Timeless is so fast and tight, the sound combination is amazing.
To me, Timeless OG with better dap, cables and tips is better than Z1R. The only drawback I can find is it’s not holographic and its medium staging. But its speed, tight bass, transient, amazing timbre is very addicting. That subbass can dig really deep, rattle your skull type bass. Give it your best cables and see what it can do
Btw the original cable that come with Timeless OG is unfortunately trash. It cripple the dynamic, treble and bass. Use better cable, the Better the cable, the clearer you can see how Timeless perform