Reminds me of the Eupen EMC non audiophile power cords. Perhaps it's even used (or a customised version) inside these Deltec cords as they're probably too small to develop and manufacture their own cables.
http://emceupen.com/index.imw?cat=2&sub=1&dbx=2
http://emceupen.com/index.imw?cat=2&sub=1&dbx=2
PS Audio P3, Shunyata ΞTRON Alpha Digital and HC/Furutech power cables, Paul Hynes SR7EHD-MR4, DIY Roon Server & Roon Endpoint running AudioLinux Headless, Phasure Lush^2 USB cable, Audioquest Diamond RJ/E ethernet, Uptone Audio etherREGEN, Mutec MC-3+ USB, Shunyata ΞTRON Anaconda Digital XLR AES/EBU, Devialet Expert 250 Pro CI, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112. More detail here.
The Netherlands
The Netherlands