This whole recent grounding / power conditioning / isolation discussion is very interesting, having myself become fully aware of the importance of overall power 'quality' only two or three years ago.I started with home-made cheap-shit cables - that gave an improvement.
Grounding: I'm currently at the 'cheap-shit cables' stage, on both chassis grounds and unused electrical inputs & outputs, and hear the benefit. I had been wondering about better cables, now its firmly on the 'to do' list, along with more investigating of how my house's grounding is implemented / room for improvement.
Power conditioning / battery supplies: Passing on 'internet wisdom' rather that actually hearing it for myself, my understanding is that in general battery based supplies can be limiting of dynamics? Also need to consider what noise the BMS itself introduces. I was pleased to hear that Taiko's upcoming BMS has (of course!) addresses both issues. I currently use active noise control on all mains and some DC supplies (the ones where I don't have an LPS offering <1microVolt noise levels), which squirt a small noise cancelling signal onto the supply rather than replace it entirely. I've been pleased with this approach, but then again active noise control on my dedicated 2 * 30A (power amp & Extreme) & 2* 20A (separate digital & analog 'sides') was my first meaningful foray into this area so I haven't heard any alternatives.
I moved home about 18 months ago from the UK to Canada, which illustrated how much more noise was on my supply in the UK. So the local specific mains situation will undoubtedly be different for everyone.
Thanks to the community for the knowledge sharing and illuminating discussions on here!
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