I have two olive Hi-Caps, one from early 90’s, one a little newer with serial numbers in the 70k and high 80 k range. First one was for use with NAC 72 and NAP 250.
The second was I think bought when I went active with SBLs in the late 90’s - I thought I got the second Hi-Cap at that time but serial number doesn’t fit, maybe I got a deal on a pre-owned one/ex demo one, or maybe it’s another Hi-Cap I got with a Naim CD player at some stage - incredible but I honestly cannot remember now! Then again it’s over 20 years ago.
The 3rd Hi-Cap must be in storage, it could even be a chrome bumper one as the Naxo I got was chrome bumper as I preferred the sound to the Olive Naxo I tried.
Anyhow the power supply for NAC 282 query got me tinkering.
The older Hi-Cap sounds better to me when used as a single PSU and probably also when as a pair, but I’m not convinced it’s much of an upgrade.
So presumably if these Hi-Caps are in need of servicing they may actually be making the 282 sound bad.
In the old forum I could have sworn I’d read that powering a NAXO was a big stress on a Hi-Cap compared to a NAC - could it be the Hi-Cap which powered the NAXO is newer but has had a more stressful life?
Perhaps I’m getting the power/signal paths mixed up and it’s all a collaborative effort from the PSUs, not one powering NAC, the other the NAXO.