Very neat Gents..
So this has two power supplies rather than the A20's single supply?
I work with with the notion of continuous improvement. Whilst it's admirable that one strives for "right first time" new materials, ideas and better techniques in manufacturing can and do provide improvements in performance.
Some manufactures like using the nomenclature of Mk 1, II etc to show they are happy with their new product, others do not.
Linn likes the term "revision" usually displayed on the underside. They also like SE of late.
...and to try to get extra sales of the 'new' unit
HiFi Foo Fight Blog NVA BMU / WTL Versalex / Transfiguration Axia /NVA Phono2 w/ 2nd PSU / GSP Revelation C / Vortexbox Appliance NAS Server / Sonore microRendu USB streamer w/ LPSU / Chord 2Qute USB dac / NVA P90sa / NVA A80MK2 (bass) / NVA A70 MK2 (tweeters) / NVA Cube 1 / NVA TIS MK1 / NVA SSPMK2 / NVA LS6 / NVA AP10H (& 1x additional PS) / Audeze LCD-2
Me almost everything I do is a work in progress, I grant others the courtesy of assuming they work under similar conditions.
Revision is not money grabbing per se