Hello Kim
I have neither a PSU upgrade nor an exotic platter mat, however my 401 does have a bearing upgrade. It was organised by the wonderful people at NWA, made by the Jeremy guy originally known for his Lenco bearings under the Redbeard name (there are loads of threads on his bearings over on lencoheaven but you may already know that).
The bearing is aesthetically very pleasing, dare I say luxurious, and undoubtedly well engineered, it certainly looks far more impressive than the currently available SMD bearing or stock bearing.
Sonically, I've never tried to compare it to the well-fettled standard bearing it replaced, so I can't really say whether I'd recommend it or not, sorry, I realise that's not much use to you.
Anyways, I believe NWA stopped supplying this bearing some years ago and developed their own. I think most of their work is focused around carts these days but it may be worth asking.
Good luck with the search!
Last edited by ost_; 26-01-2020 at 04:57.
Analogue: Garrard 401 (NWA), NWA slate plinth, Redbeard bearing, SME IV, Dynavector XX-2 MkII, Pathos In The Groove Mk II. Digital: Self built PC, RME HDSPe MADI PCIe card, Mytek 8x192 ADDA & MADI DIO card. Other: Shadow Hills Equinox, ATC SCM50ASL Pro, Towersonic TS-1B, Analysis Plus Power Oval & XLR ic, Sine SRT-3KV, Sine SA-6, Sine Royal 2S