Hi,
Because i upgraded to the Euphoria, i'm selling my Apeiron. It's a thick pure copper highend cable.
The sound improvement was drastic. If you don't believe in a sound change from a cable, this will most likely blow your mind.
What it did to my Susvara Unveiled: Added hefty (mid)bass dynamics, more body, more weight, way better sounding drums. It also reduced the treble a bit, which i missed in the end, that's why i got the Euphoria, but because of the way better dynamics the trade-off was very well worth it for me, maybe you even like the slightly reduced treble, for example with a HEKSE.
Here are my impressions:
https://www.head-fi.org/threads/hifiman-susvara-unveiled.973067/page-130#post-18354200
This thing is not fully burned-in yet, i have ~50-80 hours on it, 300h are advised.

• 15.5-AWG per polarity
• X4-wire configuration
• Kevlar center core
• Cutting-Edge Single-Crystal 7N OCC Pure Copper
• Extremely-High Strands count in each bundle
• Cryogenically & Enamelled Treated
• Custom Ultra-Soft And Flexible nylon Insulation

Cable Length: 6.5ft/2m
Headphone Connector: HIFIMAN - All Models With 3.5mm Plugs
Upgrade Headphone Connectors?: AECO 3.5mm Pure Tellurium copper Rhodium-Plated (e.g., Sony, Denon, Hifiman, Focal, Meze)
Left & Right Indicators: Blue(L) and Red(R) Indicators
Cable Termination: 4-Pin XLR Balanced AECO AX4-1611R Pure Tellurium Copper Rhodium-Plated
Sleeve Color: BLACK W/ RED TRACERS
Y Splitter: Red

Of course looks are highly subjective, but i really think that the 4-Pin AECO XLR connector is the very best XLR connector available, period.

No trades! EU only! I pay shipping! Will be shipped from germany with DHL with tracking. PP friends preferred, otherwise add 4% fee. I have excellent feedback.