No, but the M33 is on my shopping list and I'm hoping to get my hands on it soon. It will replace my already excellent M32.
According to the UK importer who has heard it, it's a big step up from existing NAD amps. I also saw a Youtube video that featured the M33 driving some fancy speakers, but you can't judge anything from a Youtube video!
RE: Purefi amp, posted on June 13, 2020 at 08:46:44
Recently purchased a VTV with Sparko opamps. Great amp, better than my NC400s. Not sure if I would say it's a necessary upgrade, but definitely worth a listen.