Didn't know about that. RIP.
Still, to my knowledge the Heed engineers introduced several changes under the hood of this amplifier so it's definitely not a 1:1 copy of the older design and they should be able to correct the flaws people are reporting.
I bought the earlier version of the Heed Obelisk Si amplifier and to my great relief found out that none of the supposed "defects" were present in the unit I purchased.
There's no noise and/or interference problems. The amp is quiet as it should be.
As for the SQ, it is splendid, with beautiful tone colours and clarity, the Heed amplifier drives the Kefs without effort. Really impressive.